- Acid Neutralizing Capacity (ANC; as CaCO3), UNF, TITR -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 90410, MCode: TT040
Dates: 11/18/04 through 04/26/22
Open Data Set

 Mean = 14.97 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 6 
 Blind Sample ID = M232  Mean = 52.54 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 6 
 Blind Sample ID = M230  Mean = 35.52 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 10 
 Blind Sample ID = M228  Mean = 50.80 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 9 
 Blind Sample ID = M226  Mean = 23.76 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 11 
 Blind Sample ID = M224  Mean = 58.41 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 11 
 Blind Sample ID = M222  Mean = 53.55 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 11 
 Blind Sample ID = M220  Mean = 30.22 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 12 
 Blind Sample ID = M218  Mean = 30.56 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 10 
 Blind Sample ID = M216  Mean = 41.66 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 12 
 Blind Sample ID = M214  Mean = 23.72 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 12 
 Blind Sample ID = M212  Mean = 26.00 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 12 
 Blind Sample ID = M210  Mean = 70.93 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 8 
 Blind Sample ID = M208  Mean = 42.91 
 % Relative Standard Deviation = 0.2 
 Number of Observations = 4 
 Blind Sample ID = M206  Mean = 42.29 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 4 
 Blind Sample ID = M204  Mean = 18.45 
 % Relative Standard Deviation = 0.4 
 Number of Observations = 4 
 Blind Sample ID = M202  Mean = 32.99 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 8 
 Blind Sample ID = 75206-25DIW  Mean = 32.67 
 % Relative Standard Deviation = 5.0 
 Number of Observations = 4 
 Blind Sample ID = 75204-25DIW  Mean = 15.00 
 % Relative Standard Deviation = 6.2 
 Number of Observations = 14 
 Blind Sample ID = 75202-25DIW  Mean = 23.15 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 12 
 Blind Sample ID = 75200-25DIW  Mean = 28.39 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 21 
 Blind Sample ID = 75198-25DIW  Mean = 61.62 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 16 
 Blind Sample ID = 75196-25DIW  Mean = 47.33 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 36 
 Blind Sample ID = 75194-25DIW  Mean = 19.25 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 40 
 Blind Sample ID = 75192-25DIW  Mean = 37.16 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 31 
 Blind Sample ID = 75190-25DIW  Mean = 43.01 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 24 
 Blind Sample ID = 75190-25192  Mean = 65.62 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 42 
 Blind Sample ID = 75188-25DIW  Mean = 77.39 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 22 
 Blind Sample ID = 75188-25190  Mean = 39.43 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 24 
 Blind Sample ID = 75186-25DIW  Mean = 32.39 
 % Relative Standard Deviation = 6.5 
 Number of Observations = 47 
 Blind Sample ID = 75184-25DIW  Mean = 54.99 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 23 
 Blind Sample ID = 75184-25188  Mean = 27.48 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 24 
 Blind Sample ID = 75182-25DIW  Mean = 45.88 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 47 
 Blind Sample ID = 75180-25DIW  Mean = 24.99 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 24 
 Blind Sample ID = 75178-25DIW  Mean = 21.06 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 47 
 Blind Sample ID = 75176-25DIW  Mean = 50.94 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 22 
 Blind Sample ID = 75174-25DIW  Mean = 27.35 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 46 
 Blind Sample ID = 75172-25DIW  Mean = 33.37 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 21 
 Blind Sample ID = 75172-25176  Mean = 23.75 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 22 
 Blind Sample ID = 75170-25DIW  Mean = 62.19 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 24 
 Blind Sample ID = 75166-25DIW  Mean = 15.78 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 47 
 Blind Sample ID = 50168-50DIW  Mean = 30.21 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 23 
 Blind Sample ID = 50168-50170  Mean = 20.79 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 24 
 Blind Sample ID = 50168-50164  Mean = 6.77 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 24 
 Blind Sample ID = 50164-50DIW  Mean = 47.26 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 24 
 Blind Sample ID = 50164-50166  Mean = 41.61 
 % Relative Standard Deviation = 0.2 
 Number of Observations = 4 
 Blind Sample ID = 25206-75204  Mean = 24.15 
 % Relative Standard Deviation = 0.4 
 Number of Observations = 4 
 Blind Sample ID = 25204-75202  Mean = 36.68 
 % Relative Standard Deviation = 0.2 
 Number of Observations = 4 
 Blind Sample ID = 25202-75206  Mean = 32.32 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 12 
 Blind Sample ID = 25202-75198  Mean = 21.41 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 12 
 Blind Sample ID = 25200-75202  Mean = 31.85 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 12 
 Blind Sample ID = 25198-75200  Mean = 55.88 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 12 
 Blind Sample ID = 25198-75194  Mean = 47.99 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 12 
 Blind Sample ID = 25196-75198  Mean = 76.64 
 % Relative Standard Deviation = 0.4 
 Number of Observations = 12 
 Blind Sample ID = 25194-75196  Mean = 34.07 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 16 
 Blind Sample ID = 25194-75192  Mean = 42.72 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 16 
 Blind Sample ID = 25192-75190  Mean = 58.90 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 16 
 Blind Sample ID = 25190-75194  Mean = 39.85 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 24 
 Blind Sample ID = 25188-75192  Mean = 77.85 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 24 
 Blind Sample ID = 25186-75188  Mean = 49.79 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 23 
 Blind Sample ID = 25184-75186  Mean = 37.98 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 24 
 Blind Sample ID = 25184-75182  Mean = 54.18 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 24 
 Blind Sample ID = 25182-75180  Mean = 48.27 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 23 
 Blind Sample ID = 25180-75184  Mean = 39.31 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 24 
 Blind Sample ID = 25180-75178  Mean = 35.44 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 23 
 Blind Sample ID = 25180-75176  Mean = 28.66 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 23 
 Blind Sample ID = 25178-75176  Mean = 37.02 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 22 
 Blind Sample ID = 25174-75176  Mean = 58.90 
 % Relative Standard Deviation = 0.4 
 Number of Observations = 22 
 Blind Sample ID = 25172-75174  Mean = 31.50 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 22 
 Blind Sample ID = 25172-75170  Mean = 30.52 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 24 
 Blind Sample ID = 25172-75168  Mean = 67.88 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 25 
 Blind Sample ID = 25168-75166
The SGPlot Procedure



- Alkalinity (as CaCO3), FIL, TITR -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 29801, MCode: TT040
Dates: 11/12/04 through 06/17/22
Open Data Set

 Mean = 35.72 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 3 
 Blind Sample ID = M234  Mean = 14.91 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = M232  Mean = 52.97 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 12 
 Blind Sample ID = M230  Mean = 35.16 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 14 
 Blind Sample ID = M228  Mean = 50.70 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 19 
 Blind Sample ID = M226  Mean = 23.91 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 18 
 Blind Sample ID = M224  Mean = 58.89 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 23 
 Blind Sample ID = M222  Mean = 53.67 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 17 
 Blind Sample ID = M220  Mean = 30.34 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 24 
 Blind Sample ID = M218  Mean = 30.65 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 16 
 Blind Sample ID = M216  Mean = 41.69 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 24 
 Blind Sample ID = M214  Mean = 23.69 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 20 
 Blind Sample ID = M212  Mean = 26.32 
 % Relative Standard Deviation = 5.1 
 Number of Observations = 24 
 Blind Sample ID = M210  Mean = 70.98 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 14 
 Blind Sample ID = M208  Mean = 43.09 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 8 
 Blind Sample ID = M206  Mean = 42.24 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 8 
 Blind Sample ID = M204  Mean = 18.64 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 8 
 Blind Sample ID = M202  Mean = 32.94 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 16 
 Blind Sample ID = 75206-25DIW  Mean = 32.52 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 8 
 Blind Sample ID = 75204-25DIW  Mean = 14.56 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 18 
 Blind Sample ID = 75202-25DIW  Mean = 23.24 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 12 
 Blind Sample ID = 75200-25DIW  Mean = 28.28 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 21 
 Blind Sample ID = 75198-25DIW  Mean = 61.14 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 16 
 Blind Sample ID = 75196-25DIW  Mean = 47.11 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 36 
 Blind Sample ID = 75194-25DIW  Mean = 19.21 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 40 
 Blind Sample ID = 75192-25DIW  Mean = 37.45 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 31 
 Blind Sample ID = 75190-25DIW  Mean = 42.94 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 24 
 Blind Sample ID = 75190-25192  Mean = 65.64 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 41 
 Blind Sample ID = 75188-25DIW  Mean = 77.43 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 21 
 Blind Sample ID = 75188-25190  Mean = 39.36 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 24 
 Blind Sample ID = 75186-25DIW  Mean = 32.12 
 % Relative Standard Deviation = 8.3 
 Number of Observations = 46 
 Blind Sample ID = 75184-25DIW  Mean = 54.96 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 22 
 Blind Sample ID = 75184-25188  Mean = 27.55 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 23 
 Blind Sample ID = 75182-25DIW  Mean = 45.93 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 48 
 Blind Sample ID = 75180-25DIW  Mean = 24.95 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 24 
 Blind Sample ID = 75178-25DIW  Mean = 21.10 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 46 
 Blind Sample ID = 75176-25DIW  Mean = 50.91 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 23 
 Blind Sample ID = 75174-25DIW  Mean = 27.33 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 46 
 Blind Sample ID = 75172-25DIW  Mean = 33.36 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 20 
 Blind Sample ID = 75172-25176  Mean = 23.76 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 22 
 Blind Sample ID = 75170-25DIW  Mean = 62.32 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 24 
 Blind Sample ID = 75166-25DIW  Mean = 15.74 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 47 
 Blind Sample ID = 50168-50DIW  Mean = 30.28 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 23 
 Blind Sample ID = 50168-50170  Mean = 21.00 
 % Relative Standard Deviation = 4.9 
 Number of Observations = 24 
 Blind Sample ID = 50168-50164  Mean = 6.81 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 23 
 Blind Sample ID = 50164-50DIW  Mean = 47.23 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 24 
 Blind Sample ID = 50164-50166  Mean = 42.12 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 8 
 Blind Sample ID = 25206-75204  Mean = 24.21 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 8 
 Blind Sample ID = 25204-75202  Mean = 36.54 
 % Relative Standard Deviation = 0.3 
 Number of Observations = 8 
 Blind Sample ID = 25202-75206  Mean = 32.29 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 12 
 Blind Sample ID = 25202-75198  Mean = 21.37 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 12 
 Blind Sample ID = 25200-75202  Mean = 31.96 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 12 
 Blind Sample ID = 25198-75200  Mean = 55.88 
 % Relative Standard Deviation = 0.4 
 Number of Observations = 12 
 Blind Sample ID = 25198-75194  Mean = 47.92 
 % Relative Standard Deviation = 0.3 
 Number of Observations = 12 
 Blind Sample ID = 25196-75198  Mean = 76.62 
 % Relative Standard Deviation = 0.4 
 Number of Observations = 12 
 Blind Sample ID = 25194-75196  Mean = 33.96 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 16 
 Blind Sample ID = 25194-75192  Mean = 42.77 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 16 
 Blind Sample ID = 25192-75190  Mean = 58.82 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 16 
 Blind Sample ID = 25190-75194  Mean = 39.61 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 24 
 Blind Sample ID = 25188-75192  Mean = 77.79 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 21 
 Blind Sample ID = 25186-75188  Mean = 49.70 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 24 
 Blind Sample ID = 25184-75186  Mean = 37.73 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 22 
 Blind Sample ID = 25184-75182  Mean = 54.07 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 23 
 Blind Sample ID = 25182-75180  Mean = 48.20 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 23 
 Blind Sample ID = 25180-75184  Mean = 39.34 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 24 
 Blind Sample ID = 25180-75178  Mean = 35.47 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 23 
 Blind Sample ID = 25180-75176  Mean = 28.61 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 23 
 Blind Sample ID = 25178-75176  Mean = 36.97 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 21 
 Blind Sample ID = 25174-75176  Mean = 59.03 
 % Relative Standard Deviation = 0.3 
 Number of Observations = 21 
 Blind Sample ID = 25172-75174  Mean = 31.60 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 22 
 Blind Sample ID = 25172-75170  Mean = 30.52 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 24 
 Blind Sample ID = 25172-75168  Mean = 67.26 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 25 
 Blind Sample ID = 25168-75166
The SGPlot Procedure



- Bromide, FIL, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 71870, MCode: IC027
Dates: 10/21/10 through 07/27/22
Open Data Set

 Mean = 0.12 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 3 
 Blind Sample ID = M234  Mean = 0.42 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 8 
 Blind Sample ID = M232  Mean = 0.04 
 % Relative Standard Deviation = 8.9 
 Number of Observations = 12 
 Blind Sample ID = M230  Mean = 0.17 
 % Relative Standard Deviation = 8.5 
 Number of Observations = 14 
 Blind Sample ID = M228  Mean = 0.05 
 % Relative Standard Deviation = 8.8 
 Number of Observations = 20 
 Blind Sample ID = M226  Mean = 0.25 
 % Relative Standard Deviation = 5.0 
 Number of Observations = 17 
 Blind Sample ID = M224  Mean = 0.08 
 % Relative Standard Deviation = 8.4 
 Number of Observations = 23 
 Blind Sample ID = M222  Mean = 0.22 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 17 
 Blind Sample ID = M220  Mean = 0.17 
 % Relative Standard Deviation = 6.4 
 Number of Observations = 24 
 Blind Sample ID = M218  Mean = 0.28 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 16 
 Blind Sample ID = M216  Mean = 0.13 
 % Relative Standard Deviation = 20.2 
 Number of Observations = 24 
 Blind Sample ID = M214  Mean = 0.27 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 20 
 Blind Sample ID = M212  Mean = 0.09 
 % Relative Standard Deviation = 8.6 
 Number of Observations = 24 
 Blind Sample ID = M210  Mean = 0.13 
 % Relative Standard Deviation = 5.7 
 Number of Observations = 14 
 Blind Sample ID = M208  Mean = 0.69 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 8 
 Blind Sample ID = M206  Mean = 0.26 
 % Relative Standard Deviation = 5.8 
 Number of Observations = 8 
 Blind Sample ID = M204  Mean = 0.46 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 8 
 Blind Sample ID = M202  Mean = 0.49 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 16 
 Blind Sample ID = 75206-25DIW  Mean = 0.19 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 8 
 Blind Sample ID = 75204-25DIW  Mean = 0.34 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 18 
 Blind Sample ID = 75202-25DIW  Mean = 0.47 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 12 
 Blind Sample ID = 75200-25DIW  Mean = 0.08 
 % Relative Standard Deviation = 17.6 
 Number of Observations = 20 
 Blind Sample ID = 75198-25DIW  Mean = 0.11 
 % Relative Standard Deviation = 17.0 
 Number of Observations = 16 
 Blind Sample ID = 75196-25DIW  Mean = 0.05 
 % Relative Standard Deviation = 17.3 
 Number of Observations = 36 
 Blind Sample ID = 75194-25DIW  Mean = 0.14 
 % Relative Standard Deviation = 7.8 
 Number of Observations = 40 
 Blind Sample ID = 75192-25DIW  Mean = 0.20 
 % Relative Standard Deviation = 5.6 
 Number of Observations = 30 
 Blind Sample ID = 75190-25DIW  Mean = 0.26 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 23 
 Blind Sample ID = 75190-25192  Mean = 0.06 
 % Relative Standard Deviation = 9.7 
 Number of Observations = 21 
 Blind Sample ID = 75188-25DIW  Mean = 0.14 
 % Relative Standard Deviation = 8.8 
 Number of Observations = 22 
 Blind Sample ID = 75188-25190  Mean = 0.36 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 8 
 Blind Sample ID = 25206-75204  Mean = 0.40 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = 25204-75202  Mean = 0.60 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 8 
 Blind Sample ID = 25202-75206  Mean = 0.18 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 12 
 Blind Sample ID = 25202-75198  Mean = 0.49 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 12 
 Blind Sample ID = 25200-75202  Mean = 0.50 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 11 
 Blind Sample ID = 25198-75200  Mean = 0.07 
 % Relative Standard Deviation = 18.5 
 Number of Observations = 12 
 Blind Sample ID = 25198-75194  Mean = 0.10 
 % Relative Standard Deviation = 17.7 
 Number of Observations = 12 
 Blind Sample ID = 25196-75198  Mean = 0.13 
 % Relative Standard Deviation = 9.1 
 Number of Observations = 12 
 Blind Sample ID = 25194-75196  Mean = 0.15 
 % Relative Standard Deviation = 6.1 
 Number of Observations = 16 
 Blind Sample ID = 25194-75192  Mean = 0.24 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 16 
 Blind Sample ID = 25192-75190  Mean = 0.12 
 % Relative Standard Deviation = 21.6 
 Number of Observations = 16 
 Blind Sample ID = 25190-75194  Mean = 0.17 
 % Relative Standard Deviation = 5.8 
 Number of Observations = 24 
 Blind Sample ID = 25188-75192
The SGPlot Procedure



- Calcium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00915, MCode: PLA11
Dates: 10/09/04 through 09/28/22
Open Data Set

 Mean = 66.79 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 12 
 Blind Sample ID = T243  Mean = 19.41 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 16 
 Blind Sample ID = T241  Mean = 111.58 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 31 
 Blind Sample ID = T239  Mean = 31.71 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 26 
 Blind Sample ID = T237  Mean = 17.17 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 45 
 Blind Sample ID = T235  Mean = 17.55 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 38 
 Blind Sample ID = T233  Mean = 29.59 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 41 
 Blind Sample ID = T231  Mean = 45.68 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 43 
 Blind Sample ID = T229  Mean = 10.68 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 44 
 Blind Sample ID = T227  Mean = 117.38 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 41 
 Blind Sample ID = T225  Mean = 3.69 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 47 
 Blind Sample ID = T223  Mean = 17.51 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 42 
 Blind Sample ID = T221  Mean = 20.95 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 42 
 Blind Sample ID = T219  Mean = 32.10 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 48 
 Blind Sample ID = T217  Mean = 31.12 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 30 
 Blind Sample ID = T215  Mean = 26.38 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 28 
 Blind Sample ID = T211  Mean = 19.07 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 16 
 Blind Sample ID = T209  Mean = 0.27 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 6 
 Blind Sample ID = P73  Mean = 0.35 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 6 
 Blind Sample ID = P72  Mean = 0.40 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 15 
 Blind Sample ID = P71  Mean = 0.84 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 8 
 Blind Sample ID = P70  Mean = 0.22 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 16 
 Blind Sample ID = P69  Mean = 0.92 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 8 
 Blind Sample ID = P68  Mean = 0.29 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 16 
 Blind Sample ID = P67  Mean = 0.97 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 7 
 Blind Sample ID = P66  Mean = 0.31 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 14 
 Blind Sample ID = P65  Mean = 0.85 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 8 
 Blind Sample ID = P64  Mean = 0.85 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 16 
 Blind Sample ID = P63  Mean = 1.90 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 8 
 Blind Sample ID = P62  Mean = 0.60 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 16 
 Blind Sample ID = P61  Mean = 0.66 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 8 
 Blind Sample ID = P60  Mean = 0.51 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 16 
 Blind Sample ID = P59  Mean = 1.87 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 8 
 Blind Sample ID = P58  Mean = 0.33 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 16 
 Blind Sample ID = P57  Mean = 1.00 
 % Relative Standard Deviation = 5.0 
 Number of Observations = 8 
 Blind Sample ID = P56  Mean = 1.00 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 14 
 Blind Sample ID = P55  Mean = 0.25 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 8 
 Blind Sample ID = P54  Mean = 0.74 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 16 
 Blind Sample ID = P53  Mean = 0.42 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 8 
 Blind Sample ID = P52  Mean = 0.32 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 24 
 Blind Sample ID = P51  Mean = 0.85 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 32 
 Blind Sample ID = P50  Mean = 1.91 
 % Relative Standard Deviation = 5.5 
 Number of Observations = 31 
 Blind Sample ID = P49  Mean = 0.55 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 30 
 Blind Sample ID = P48  Mean = 1.42 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 14 
 Blind Sample ID = P47  Mean = 0.44 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 25 
 Blind Sample ID = P46  Mean = 0.14 
 % Relative Standard Deviation = 6.2 
 Number of Observations = 31 
 Blind Sample ID = P45  Mean = 0.53 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 28 
 Blind Sample ID = P44  Mean = 0.53 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 30 
 Blind Sample ID = P43  Mean = 0.50 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 32 
 Blind Sample ID = P42  Mean = 0.55 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 24 
 Blind Sample ID = P41  Mean = 0.59 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 24 
 Blind Sample ID = P36  Mean = 49.37 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 28 
 Blind Sample ID = 75213-25DIW  Mean = 19.51 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 16 
 Blind Sample ID = 75211-25DIW  Mean = 13.92 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 27 
 Blind Sample ID = 75209-25DIW  Mean = 17.98 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 14 
 Blind Sample ID = 75207-25DIW  Mean = 6.19 
 % Relative Standard Deviation = 5.1 
 Number of Observations = 30 
 Blind Sample ID = 75205-25DIW  Mean = 8.48 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 12 
 Blind Sample ID = 75203-25DIW  Mean = 40.70 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 37 
 Blind Sample ID = 75201-25DIW  Mean = 16.70 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 18 
 Blind Sample ID = 75199-25201  Mean = 42.18 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 32 
 Blind Sample ID = 75197-25DIW  Mean = 21.07 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 16 
 Blind Sample ID = 75195-25197  Mean = 13.89 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 32 
 Blind Sample ID = 75193-25DIW  Mean = 27.85 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 18 
 Blind Sample ID = 75193-25197  Mean = 22.96 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 30 
 Blind Sample ID = 75191-25DIW  Mean = 23.20 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 32 
 Blind Sample ID = 75189-25DIW  Mean = 27.93 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 18 
 Blind Sample ID = 75189-25193  Mean = 30.16 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 14 
 Blind Sample ID = 75189-25191  Mean = 2.94 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 29 
 Blind Sample ID = 75187-25DIW  Mean = 9.58 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 14 
 Blind Sample ID = 75185-25DIW  Mean = 8.65 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 29 
 Blind Sample ID = 75183-25DIW  Mean = 10.35 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 11 
 Blind Sample ID = 75181-25DIW  Mean = 14.50 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 32 
 Blind Sample ID = 75179-25DIW  Mean = 6.45 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 16 
 Blind Sample ID = 75175-25DIW  Mean = 17.56 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 16 
 Blind Sample ID = 50187-50191  Mean = 17.72 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 18 
 Blind Sample ID = 50187-50189  Mean = 7.74 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 16 
 Blind Sample ID = 50187-50183  Mean = 8.39 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 16 
 Blind Sample ID = 50185-50187  Mean = 12.23 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 18 
 Blind Sample ID = 50183-50185  Mean = 26.14 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 16 
 Blind Sample ID = 50177-50179  Mean = 4.40 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 31 
 Blind Sample ID = 50175-50DIW  Mean = 22.66 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 16 
 Blind Sample ID = 50175-50173  Mean = 17.92 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 15 
 Blind Sample ID = 50173-50DIW  Mean = 3.33 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 15 
 Blind Sample ID = 50171-50DIW  Mean = 21.28 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 12 
 Blind Sample ID = 50171-50173  Mean = 35.96 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 16 
 Blind Sample ID = 25213-75211  Mean = 20.27 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 14 
 Blind Sample ID = 25211-75209  Mean = 53.85 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 14 
 Blind Sample ID = 25209-75213  Mean = 22.83 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 16 
 Blind Sample ID = 25209-75207  Mean = 12.34 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 14 
 Blind Sample ID = 25207-75205  Mean = 15.99 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 14 
 Blind Sample ID = 25205-75209  Mean = 42.52 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 14 
 Blind Sample ID = 25205-75201  Mean = 9.13 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 12 
 Blind Sample ID = 25203-75205  Mean = 22.40 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 14 
 Blind Sample ID = 25201-75203  Mean = 56.06 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 18 
 Blind Sample ID = 25201-75197  Mean = 41.81 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 20 
 Blind Sample ID = 25199-75201  Mean = 17.20 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 18 
 Blind Sample ID = 25197-75199  Mean = 43.46 
 % Relative Standard Deviation = 5.9 
 Number of Observations = 13 
 Blind Sample ID = 25195-75197  Mean = 12.12 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 16 
 Blind Sample ID = 25193-75195  Mean = 20.93 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 16 
 Blind Sample ID = 25191-75193  Mean = 13.11 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 23 
 Blind Sample ID = 25183-75181  Mean = 17.51 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 15 
 Blind Sample ID = 25181-75179  Mean = 13.51 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 8 
 Blind Sample ID = 25179-75183  Mean = 29.12 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 16 
 Blind Sample ID = 25179-75177  Mean = 14.54 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 16 
 Blind Sample ID = 25177-75175  Mean = 8.08 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 20 
 Blind Sample ID = 25171-75175
The SGPlot Procedure



- Calcium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00916, MCode: PLA15
Dates: 12/08/06 through 06/30/16
Open Data Set

 Mean = 18.77 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 3 
 Blind Sample ID = 75211-25DIW  Mean = 13.24 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 10 
 Blind Sample ID = 75209-25DIW  Mean = 17.79 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 8 
 Blind Sample ID = 75207-25DIW  Mean = 6.13 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 14 
 Blind Sample ID = 75205-25DIW  Mean = 8.38 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 6 
 Blind Sample ID = 75203-25DIW  Mean = 39.65 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 16 
 Blind Sample ID = 75201-25DIW  Mean = 16.19 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 6 
 Blind Sample ID = 75199-25201  Mean = 39.95 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 16 
 Blind Sample ID = 75197-25DIW  Mean = 20.73 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 5 
 Blind Sample ID = 75195-25197  Mean = 13.31 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 16 
 Blind Sample ID = 75193-25DIW  Mean = 26.92 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 8 
 Blind Sample ID = 75193-25197  Mean = 21.69 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 16 
 Blind Sample ID = 75191-25DIW  Mean = 22.39 
 % Relative Standard Deviation = 4.8 
 Number of Observations = 12 
 Blind Sample ID = 75189-25DIW  Mean = 26.33 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 8 
 Blind Sample ID = 75189-25193  Mean = 29.73 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 6 
 Blind Sample ID = 75189-25191  Mean = 2.78 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 12 
 Blind Sample ID = 75187-25DIW  Mean = 9.03 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 6 
 Blind Sample ID = 75185-25DIW  Mean = 8.39 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 13 
 Blind Sample ID = 75183-25DIW  Mean = 9.87 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 8 
 Blind Sample ID = 75181-25DIW  Mean = 13.90 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 4 
 Blind Sample ID = 75179-25DIW  Mean = 16.70 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 6 
 Blind Sample ID = 50187-50191  Mean = 16.95 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 8 
 Blind Sample ID = 50187-50189  Mean = 7.41 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 6 
 Blind Sample ID = 50187-50183  Mean = 7.99 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 8 
 Blind Sample ID = 50185-50187  Mean = 12.44 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 8 
 Blind Sample ID = 50183-50185  Mean = 34.57 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 4 
 Blind Sample ID = 25213-75211  Mean = 21.95 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 8 
 Blind Sample ID = 25209-75207  Mean = 11.96 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 8 
 Blind Sample ID = 25207-75205  Mean = 15.57 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 8 
 Blind Sample ID = 25205-75209  Mean = 41.26 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 6 
 Blind Sample ID = 25205-75201  Mean = 8.95 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 6 
 Blind Sample ID = 25203-75205  Mean = 21.51 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 7 
 Blind Sample ID = 25201-75203  Mean = 54.31 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 6 
 Blind Sample ID = 25201-75197  Mean = 40.51 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 8 
 Blind Sample ID = 25199-75201  Mean = 16.52 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 6 
 Blind Sample ID = 25197-75199  Mean = 42.75 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 5 
 Blind Sample ID = 25195-75197  Mean = 11.99 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 6 
 Blind Sample ID = 25193-75195  Mean = 20.58 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 6 
 Blind Sample ID = 25191-75193  Mean = 12.94 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 15 
 Blind Sample ID = 25183-75181  Mean = 17.67 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 8 
 Blind Sample ID = 25181-75179
The SGPlot Procedure



- Calcium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00916, MCode: PLO07
Dates: 05/28/15 through 09/30/22
Open Data Set

 Mean = 64.86 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 5 
 Blind Sample ID = T243  Mean = 19.50 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = T241  Mean = 110.57 
 % Relative Standard Deviation = 5.0 
 Number of Observations = 15 
 Blind Sample ID = T239  Mean = 31.54 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 10 
 Blind Sample ID = T237  Mean = 16.72 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 22 
 Blind Sample ID = T235  Mean = 17.40 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 17 
 Blind Sample ID = T233  Mean = 29.69 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 18 
 Blind Sample ID = T231  Mean = 45.28 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 21 
 Blind Sample ID = T229  Mean = 10.73 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 24 
 Blind Sample ID = T227  Mean = 117.19 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 18 
 Blind Sample ID = T225  Mean = 3.68 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 23 
 Blind Sample ID = T223  Mean = 17.36 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 18 
 Blind Sample ID = T221  Mean = 20.75 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 18 
 Blind Sample ID = T219  Mean = 31.96 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 24 
 Blind Sample ID = T217  Mean = 30.86 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 15 
 Blind Sample ID = T215  Mean = 25.94 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 12 
 Blind Sample ID = T211  Mean = 18.64 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 8 
 Blind Sample ID = T209  Mean = 49.29 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 11 
 Blind Sample ID = 75213-25DIW  Mean = 19.68 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 5 
 Blind Sample ID = 75211-25DIW  Mean = 14.31 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 4 
 Blind Sample ID = 75209-25DIW  Mean = 35.98 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 4 
 Blind Sample ID = 25213-75211  Mean = 20.63 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 4 
 Blind Sample ID = 25211-75209  Mean = 53.17 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 4 
 Blind Sample ID = 25209-75213
The SGPlot Procedure



- Chloride, FIL, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00940, MCode: IC022
Dates: 12/29/04 through 09/27/22
Open Data Set

 Mean = 3.00 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 6 
 Blind Sample ID = P73  Mean = 3.32 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 6 
 Blind Sample ID = P72  Mean = 2.96 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 15 
 Blind Sample ID = P71  Mean = 6.90 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 8 
 Blind Sample ID = P70  Mean = 2.59 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 16 
 Blind Sample ID = P69  Mean = 2.23 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 8 
 Blind Sample ID = P68  Mean = 2.59 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 16 
 Blind Sample ID = P67  Mean = 8.70 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 7 
 Blind Sample ID = P66  Mean = 2.00 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 14 
 Blind Sample ID = P65  Mean = 6.84 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = P64  Mean = 4.91 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 16 
 Blind Sample ID = P63  Mean = 2.28 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 8 
 Blind Sample ID = P62  Mean = 11.93 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 16 
 Blind Sample ID = P61  Mean = 2.96 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 8 
 Blind Sample ID = P60  Mean = 4.39 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 16 
 Blind Sample ID = P59  Mean = 4.86 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 8 
 Blind Sample ID = P58  Mean = 2.17 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 16 
 Blind Sample ID = P57  Mean = 4.12 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 7 
 Blind Sample ID = P56  Mean = 1.97 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 6 
 Blind Sample ID = P55  Mean = 35.15 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 3 
 Blind Sample ID = M234  Mean = 69.76 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 8 
 Blind Sample ID = M232  Mean = 36.45 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 12 
 Blind Sample ID = M230  Mean = 9.54 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 14 
 Blind Sample ID = M228  Mean = 26.24 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 20 
 Blind Sample ID = M226  Mean = 10.13 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 18 
 Blind Sample ID = M224  Mean = 7.50 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 23 
 Blind Sample ID = M222  Mean = 15.87 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 17 
 Blind Sample ID = M220  Mean = 67.90 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 23 
 Blind Sample ID = M218  Mean = 19.87 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 16 
 Blind Sample ID = M216  Mean = 28.91 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 24 
 Blind Sample ID = M214  Mean = 7.90 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 19 
 Blind Sample ID = M212  Mean = 12.95 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 24 
 Blind Sample ID = M210  Mean = 63.39 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 14 
 Blind Sample ID = M208  Mean = 18.14 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 8 
 Blind Sample ID = M206  Mean = 42.26 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 8 
 Blind Sample ID = M204  Mean = 10.94 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 8 
 Blind Sample ID = M202  Mean = 13.66 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 16 
 Blind Sample ID = 75206-25DIW  Mean = 31.67 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 8 
 Blind Sample ID = 75204-25DIW  Mean = 8.01 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 18 
 Blind Sample ID = 75202-25DIW  Mean = 13.09 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 13 
 Blind Sample ID = 75200-25DIW  Mean = 10.95 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 29 
 Blind Sample ID = 75198-25DIW  Mean = 24.21 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 24 
 Blind Sample ID = 75196-25DIW  Mean = 32.96 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 52 
 Blind Sample ID = 75194-25DIW  Mean = 10.02 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 48 
 Blind Sample ID = 75192-25DIW  Mean = 21.33 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 40 
 Blind Sample ID = 75190-25DIW  Mean = 24.64 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 24 
 Blind Sample ID = 75190-25192  Mean = 21.73 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 43 
 Blind Sample ID = 75188-25DIW  Mean = 28.73 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 22 
 Blind Sample ID = 75188-25190  Mean = 17.46 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 22 
 Blind Sample ID = 75186-25DIW  Mean = 5.81 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 43 
 Blind Sample ID = 75184-25DIW  Mean = 13.69 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 24 
 Blind Sample ID = 75184-25188  Mean = 15.72 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 24 
 Blind Sample ID = 75182-25DIW  Mean = 21.83 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 48 
 Blind Sample ID = 75180-25DIW  Mean = 42.92 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 24 
 Blind Sample ID = 75178-25DIW  Mean = 12.42 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 47 
 Blind Sample ID = 75176-25DIW  Mean = 23.86 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 23 
 Blind Sample ID = 75174-25DIW  Mean = 11.27 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 46 
 Blind Sample ID = 75172-25DIW  Mean = 15.91 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 21 
 Blind Sample ID = 75172-25176  Mean = 6.45 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 22 
 Blind Sample ID = 75170-25DIW  Mean = 27.69 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 24 
 Blind Sample ID = 75166-25DIW  Mean = 4.84 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 47 
 Blind Sample ID = 50168-50DIW  Mean = 8.78 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 23 
 Blind Sample ID = 50168-50170  Mean = 16.08 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 23 
 Blind Sample ID = 50168-50164  Mean = 11.39 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 24 
 Blind Sample ID = 50164-50DIW  Mean = 30.08 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 24 
 Blind Sample ID = 50164-50166  Mean = 36.23 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 8 
 Blind Sample ID = 25206-75204  Mean = 18.66 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 8 
 Blind Sample ID = 25204-75202  Mean = 16.55 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 8 
 Blind Sample ID = 25202-75206  Mean = 13.58 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 12 
 Blind Sample ID = 25202-75198  Mean = 12.42 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 12 
 Blind Sample ID = 25200-75202  Mean = 16.84 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 12 
 Blind Sample ID = 25198-75200  Mean = 37.11 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 20 
 Blind Sample ID = 25198-75194  Mean = 18.95 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 19 
 Blind Sample ID = 25196-75198  Mean = 35.36 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 20 
 Blind Sample ID = 25194-75196  Mean = 20.58 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 24 
 Blind Sample ID = 25194-75192  Mean = 24.26 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 24 
 Blind Sample ID = 25192-75190  Mean = 40.19 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 24 
 Blind Sample ID = 25190-75194  Mean = 17.08 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 24 
 Blind Sample ID = 25188-75192  Mean = 27.32 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 24 
 Blind Sample ID = 25186-75188  Mean = 19.08 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 23 
 Blind Sample ID = 25184-75186  Mean = 17.37 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 24 
 Blind Sample ID = 25184-75182  Mean = 26.63 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 24 
 Blind Sample ID = 25182-75180  Mean = 13.50 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 22 
 Blind Sample ID = 25180-75184  Mean = 51.03 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 24 
 Blind Sample ID = 25180-75178  Mean = 19.53 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 23 
 Blind Sample ID = 25180-75176  Mean = 26.40 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 23 
 Blind Sample ID = 25178-75176  Mean = 20.40 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 22 
 Blind Sample ID = 25174-75176  Mean = 27.57 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 22 
 Blind Sample ID = 25172-75174  Mean = 10.04 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 22 
 Blind Sample ID = 25172-75170  Mean = 10.66 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 24 
 Blind Sample ID = 25172-75168  Mean = 29.78 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 25 
 Blind Sample ID = 25168-75166
The SGPlot Procedure



- Chloride, FIL, IC, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00940, MCode: IC024
Dates: 03/10/05 through 11/01/13
Open Data Set

 Mean = 2.12 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 8 
 Blind Sample ID = P55  Mean = 1.52 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 8 
 Blind Sample ID = P54  Mean = 1.10 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 16 
 Blind Sample ID = P53  Mean = 1.85 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 8 
 Blind Sample ID = P52  Mean = 1.25 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 24 
 Blind Sample ID = P51  Mean = 1.62 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 32 
 Blind Sample ID = P50  Mean = 1.12 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 31 
 Blind Sample ID = P49  Mean = 2.53 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 30 
 Blind Sample ID = P48  Mean = 3.64 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 14 
 Blind Sample ID = P47  Mean = 4.56 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 25 
 Blind Sample ID = P46  Mean = 0.28 
 % Relative Standard Deviation = 19.7 
 Number of Observations = 31 
 Blind Sample ID = P45  Mean = 2.47 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 28 
 Blind Sample ID = P44  Mean = 4.95 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 30 
 Blind Sample ID = P43  Mean = 6.28 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 32 
 Blind Sample ID = P42  Mean = 6.00 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 24 
 Blind Sample ID = P41  Mean = 3.64 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 24 
 Blind Sample ID = P36
The SGPlot Procedure



- Fluoride, FIL, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00950, MCode: IC003
Dates: 06/16/13 through 09/27/22
Open Data Set

 Mean = 0.07 
 % Relative Standard Deviation = 11.4 
 Number of Observations = 6 
 Blind Sample ID = P73  Mean = 0.11 
 % Relative Standard Deviation = 6.9 
 Number of Observations = 6 
 Blind Sample ID = P72  Mean = 0.05 
 % Relative Standard Deviation = 16.4 
 Number of Observations = 15 
 Blind Sample ID = P71  Mean = 0.40 
 % Relative Standard Deviation = 9.9 
 Number of Observations = 5 
 Blind Sample ID = P70  Mean = 0.06 
 % Relative Standard Deviation = 13.0 
 Number of Observations = 16 
 Blind Sample ID = P69  Mean = 0.02 
 % Relative Standard Deviation = 5.8 
 Number of Observations = 8 
 Blind Sample ID = P68  Mean = 0.06 
 % Relative Standard Deviation = 6.1 
 Number of Observations = 15 
 Blind Sample ID = P67  Mean = 0.20 
 % Relative Standard Deviation = 6.6 
 Number of Observations = 7 
 Blind Sample ID = P66  Mean = 0.05 
 % Relative Standard Deviation = 21.2 
 Number of Observations = 14 
 Blind Sample ID = P65  Mean = 0.35 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 8 
 Blind Sample ID = P64  Mean = 0.06 
 % Relative Standard Deviation = 15.5 
 Number of Observations = 16 
 Blind Sample ID = P63  Mean = 0.14 
 % Relative Standard Deviation = 14.0 
 Number of Observations = 6 
 Blind Sample ID = P62  Mean = 0.07 
 % Relative Standard Deviation = 9.0 
 Number of Observations = 8 
 Blind Sample ID = P60  Mean = 0.01 
 % Relative Standard Deviation = 20.4 
 Number of Observations = 6 
 Blind Sample ID = P59  Mean = 0.24 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 8 
 Blind Sample ID = P58  Mean = 0.10 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 16 
 Blind Sample ID = P57  Mean = 0.07 
 % Relative Standard Deviation = 14.2 
 Number of Observations = 8 
 Blind Sample ID = P56  Mean = 0.06 
 % Relative Standard Deviation = 7.8 
 Number of Observations = 6 
 Blind Sample ID = P55  Mean = 1.14 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 3 
 Blind Sample ID = M234  Mean = 0.22 
 % Relative Standard Deviation = 6.0 
 Number of Observations = 8 
 Blind Sample ID = M232  Mean = 0.33 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 12 
 Blind Sample ID = M230  Mean = 0.71 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 14 
 Blind Sample ID = M228  Mean = 0.26 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 20 
 Blind Sample ID = M226  Mean = 0.75 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 18 
 Blind Sample ID = M224  Mean = 0.38 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 23 
 Blind Sample ID = M222  Mean = 0.66 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 17 
 Blind Sample ID = M220  Mean = 0.36 
 % Relative Standard Deviation = 5.1 
 Number of Observations = 23 
 Blind Sample ID = M218  Mean = 0.25 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 16 
 Blind Sample ID = M216  Mean = 0.60 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 24 
 Blind Sample ID = M214  Mean = 0.29 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 19 
 Blind Sample ID = M212  Mean = 0.19 
 % Relative Standard Deviation = 4.9 
 Number of Observations = 24 
 Blind Sample ID = M210  Mean = 0.19 
 % Relative Standard Deviation = 7.9 
 Number of Observations = 14 
 Blind Sample ID = M208  Mean = 0.44 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 8 
 Blind Sample ID = M206  Mean = 0.43 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 7 
 Blind Sample ID = M204  Mean = 0.15 
 % Relative Standard Deviation = 5.4 
 Number of Observations = 8 
 Blind Sample ID = M202  Mean = 0.34 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 16 
 Blind Sample ID = 75206-25DIW  Mean = 0.32 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 8 
 Blind Sample ID = 75204-25DIW  Mean = 0.11 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 18 
 Blind Sample ID = 75202-25DIW  Mean = 0.20 
 % Relative Standard Deviation = 4.9 
 Number of Observations = 12 
 Blind Sample ID = 75200-25DIW  Mean = 0.16 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 13 
 Blind Sample ID = 75198-25DIW  Mean = 0.67 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 8 
 Blind Sample ID = 75196-25DIW  Mean = 0.44 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 8 
 Blind Sample ID = 25206-75204  Mean = 0.22 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = 25204-75202  Mean = 0.38 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 8 
 Blind Sample ID = 25202-75206  Mean = 0.20 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 12 
 Blind Sample ID = 25202-75198  Mean = 0.18 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 12 
 Blind Sample ID = 25200-75202  Mean = 0.25 
 % Relative Standard Deviation = 5.0 
 Number of Observations = 12 
 Blind Sample ID = 25198-75200  Mean = 0.33 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 4 
 Blind Sample ID = 25198-75194  Mean = 0.38 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 4 
 Blind Sample ID = 25196-75198  Mean = 0.78 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 4 
 Blind Sample ID = 25194-75196
The SGPlot Procedure



- Fluoride, FIL, ISE -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00950, MCode: ISE05
Dates: 10/20/04 through 03/29/13
Open Data Set

 Mean = 0.14 
 % Relative Standard Deviation = 11.9 
 Number of Observations = 6 
 Blind Sample ID = 75198-25DIW  Mean = 0.62 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 6 
 Blind Sample ID = 75196-25DIW  Mean = 0.26 
 % Relative Standard Deviation = 7.6 
 Number of Observations = 32 
 Blind Sample ID = 75194-25DIW  Mean = 0.10 
 % Relative Standard Deviation = 18.8 
 Number of Observations = 38 
 Blind Sample ID = 75192-25DIW  Mean = 0.38 
 % Relative Standard Deviation = 5.5 
 Number of Observations = 31 
 Blind Sample ID = 75190-25DIW  Mean = 0.42 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 24 
 Blind Sample ID = 75190-25192  Mean = 0.64 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 44 
 Blind Sample ID = 75188-25DIW  Mean = 0.75 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 22 
 Blind Sample ID = 75188-25190  Mean = 0.71 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 24 
 Blind Sample ID = 75186-25DIW  Mean = 1.31 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 47 
 Blind Sample ID = 75184-25DIW  Mean = 1.49 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 24 
 Blind Sample ID = 75184-25188  Mean = 0.12 
 % Relative Standard Deviation = 17.9 
 Number of Observations = 24 
 Blind Sample ID = 75182-25DIW  Mean = 0.21 
 % Relative Standard Deviation = 8.3 
 Number of Observations = 48 
 Blind Sample ID = 75180-25DIW  Mean = 0.22 
 % Relative Standard Deviation = 8.7 
 Number of Observations = 24 
 Blind Sample ID = 75178-25DIW  Mean = 0.16 
 % Relative Standard Deviation = 9.5 
 Number of Observations = 47 
 Blind Sample ID = 75176-25DIW  Mean = 0.22 
 % Relative Standard Deviation = 5.6 
 Number of Observations = 22 
 Blind Sample ID = 75174-25DIW  Mean = 0.32 
 % Relative Standard Deviation = 8.2 
 Number of Observations = 45 
 Blind Sample ID = 75172-25DIW  Mean = 0.37 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 21 
 Blind Sample ID = 75172-25176  Mean = 0.21 
 % Relative Standard Deviation = 7.5 
 Number of Observations = 22 
 Blind Sample ID = 75170-25DIW  Mean = 0.55 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 24 
 Blind Sample ID = 75166-25DIW  Mean = 0.46 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 47 
 Blind Sample ID = 50168-50DIW  Mean = 0.59 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 23 
 Blind Sample ID = 50168-50170  Mean = 0.76 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 24 
 Blind Sample ID = 50168-50164  Mean = 0.32 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 24 
 Blind Sample ID = 50164-50DIW  Mean = 0.69 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 24 
 Blind Sample ID = 50164-50166  Mean = 0.31 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 8 
 Blind Sample ID = 25198-75194  Mean = 0.35 
 % Relative Standard Deviation = 4.9 
 Number of Observations = 8 
 Blind Sample ID = 25196-75198  Mean = 0.73 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 8 
 Blind Sample ID = 25194-75196  Mean = 0.19 
 % Relative Standard Deviation = 9.1 
 Number of Observations = 16 
 Blind Sample ID = 25194-75192  Mean = 0.42 
 % Relative Standard Deviation = 7.8 
 Number of Observations = 16 
 Blind Sample ID = 25192-75190  Mean = 0.39 
 % Relative Standard Deviation = 9.1 
 Number of Observations = 16 
 Blind Sample ID = 25190-75194  Mean = 0.32 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 24 
 Blind Sample ID = 25188-75192  Mean = 0.85 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 24 
 Blind Sample ID = 25186-75188  Mean = 1.13 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 24 
 Blind Sample ID = 25184-75186  Mean = 0.57 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 24 
 Blind Sample ID = 25184-75182  Mean = 0.25 
 % Relative Standard Deviation = 8.9 
 Number of Observations = 24 
 Blind Sample ID = 25182-75180  Mean = 1.37 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 23 
 Blind Sample ID = 25180-75184  Mean = 0.29 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 24 
 Blind Sample ID = 25180-75178  Mean = 0.23 
 % Relative Standard Deviation = 5.1 
 Number of Observations = 23 
 Blind Sample ID = 25180-75176  Mean = 0.23 
 % Relative Standard Deviation = 7.1 
 Number of Observations = 23 
 Blind Sample ID = 25178-75176  Mean = 0.24 
 % Relative Standard Deviation = 7.2 
 Number of Observations = 22 
 Blind Sample ID = 25174-75176  Mean = 0.32 
 % Relative Standard Deviation = 5.5 
 Number of Observations = 22 
 Blind Sample ID = 25172-75174  Mean = 0.31 
 % Relative Standard Deviation = 6.5 
 Number of Observations = 22 
 Blind Sample ID = 25172-75170  Mean = 0.79 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 24 
 Blind Sample ID = 25172-75168  Mean = 0.77 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 25 
 Blind Sample ID = 25168-75166
The SGPlot Procedure



- Magnesium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00925, MCode: PLA11
Dates: 10/09/04 through 09/28/22
Open Data Set

 Mean = 34.41 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 12 
 Blind Sample ID = T243  Mean = 6.81 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 16 
 Blind Sample ID = T241  Mean = 29.58 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 31 
 Blind Sample ID = T239  Mean = 7.56 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 26 
 Blind Sample ID = T237  Mean = 4.22 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 44 
 Blind Sample ID = T235  Mean = 6.77 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 38 
 Blind Sample ID = T233  Mean = 14.30 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 41 
 Blind Sample ID = T231  Mean = 23.32 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 43 
 Blind Sample ID = T229  Mean = 3.26 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 44 
 Blind Sample ID = T227  Mean = 15.43 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 41 
 Blind Sample ID = T225  Mean = 4.16 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 47 
 Blind Sample ID = T223  Mean = 3.79 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 42 
 Blind Sample ID = T221  Mean = 5.85 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 42 
 Blind Sample ID = T219  Mean = 7.55 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 48 
 Blind Sample ID = T217  Mean = 10.78 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 32 
 Blind Sample ID = T215  Mean = 5.34 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 28 
 Blind Sample ID = T211  Mean = 5.09 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 16 
 Blind Sample ID = T209  Mean = 0.17 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 6 
 Blind Sample ID = P73  Mean = 0.10 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 6 
 Blind Sample ID = P72  Mean = 0.20 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 15 
 Blind Sample ID = P71  Mean = 0.36 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 8 
 Blind Sample ID = P70  Mean = 0.07 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 16 
 Blind Sample ID = P69  Mean = 0.11 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 8 
 Blind Sample ID = P68  Mean = 0.08 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 16 
 Blind Sample ID = P67  Mean = 0.70 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 7 
 Blind Sample ID = P66  Mean = 0.09 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 14 
 Blind Sample ID = P65  Mean = 0.38 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 8 
 Blind Sample ID = P64  Mean = 0.13 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 16 
 Blind Sample ID = P63  Mean = 0.18 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 8 
 Blind Sample ID = P62  Mean = 0.24 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 16 
 Blind Sample ID = P61  Mean = 0.11 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 8 
 Blind Sample ID = P60  Mean = 0.46 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 16 
 Blind Sample ID = P59  Mean = 0.09 
 % Relative Standard Deviation = 5.1 
 Number of Observations = 8 
 Blind Sample ID = P58  Mean = 0.27 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 16 
 Blind Sample ID = P57  Mean = 0.13 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 8 
 Blind Sample ID = P56  Mean = 0.09 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 14 
 Blind Sample ID = P55  Mean = 0.18 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 8 
 Blind Sample ID = P54  Mean = 0.35 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 16 
 Blind Sample ID = P53  Mean = 0.06 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 8 
 Blind Sample ID = P52  Mean = 0.31 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 24 
 Blind Sample ID = P51  Mean = 0.23 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 32 
 Blind Sample ID = P50  Mean = 0.10 
 % Relative Standard Deviation = 4.9 
 Number of Observations = 31 
 Blind Sample ID = P49  Mean = 0.05 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 30 
 Blind Sample ID = P48  Mean = 0.12 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 14 
 Blind Sample ID = P47  Mean = 0.05 
 % Relative Standard Deviation = 6.5 
 Number of Observations = 26 
 Blind Sample ID = P46  Mean = 0.17 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 31 
 Blind Sample ID = P45  Mean = 0.09 
 % Relative Standard Deviation = 5.6 
 Number of Observations = 27 
 Blind Sample ID = P44  Mean = 0.04 
 % Relative Standard Deviation = 7.5 
 Number of Observations = 30 
 Blind Sample ID = P43  Mean = 0.05 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 31 
 Blind Sample ID = P42  Mean = 0.05 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 24 
 Blind Sample ID = P41  Mean = 0.07 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 24 
 Blind Sample ID = P36  Mean = 3.18 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 28 
 Blind Sample ID = 75213-25DIW  Mean = 4.06 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 16 
 Blind Sample ID = 75211-25DIW  Mean = 3.75 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 27 
 Blind Sample ID = 75209-25DIW  Mean = 4.62 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 14 
 Blind Sample ID = 75207-25DIW  Mean = 1.72 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 30 
 Blind Sample ID = 75205-25DIW  Mean = 0.97 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 12 
 Blind Sample ID = 75203-25DIW  Mean = 18.29 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 37 
 Blind Sample ID = 75201-25DIW  Mean = 10.90 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 18 
 Blind Sample ID = 75199-25201  Mean = 18.72 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 32 
 Blind Sample ID = 75197-25DIW  Mean = 8.51 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 16 
 Blind Sample ID = 75195-25197  Mean = 3.42 
 % Relative Standard Deviation = 4.8 
 Number of Observations = 32 
 Blind Sample ID = 75193-25DIW  Mean = 9.45 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 18 
 Blind Sample ID = 75193-25197  Mean = 2.81 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 30 
 Blind Sample ID = 75191-25DIW  Mean = 5.89 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 32 
 Blind Sample ID = 75189-25DIW  Mean = 6.82 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 18 
 Blind Sample ID = 75189-25193  Mean = 6.69 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 14 
 Blind Sample ID = 75189-25191  Mean = 9.58 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 30 
 Blind Sample ID = 75187-25DIW  Mean = 3.53 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 14 
 Blind Sample ID = 75185-25DIW  Mean = 5.85 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 29 
 Blind Sample ID = 75183-25DIW  Mean = 2.30 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 11 
 Blind Sample ID = 75181-25DIW  Mean = 3.39 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 32 
 Blind Sample ID = 75179-25DIW  Mean = 1.51 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 16 
 Blind Sample ID = 75175-25DIW  Mean = 8.30 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 16 
 Blind Sample ID = 50187-50191  Mean = 10.60 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 18 
 Blind Sample ID = 50187-50189  Mean = 10.31 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 16 
 Blind Sample ID = 50187-50183  Mean = 8.64 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 16 
 Blind Sample ID = 50185-50187  Mean = 6.18 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 18 
 Blind Sample ID = 50183-50185  Mean = 6.04 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 16 
 Blind Sample ID = 50177-50179  Mean = 1.02 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 31 
 Blind Sample ID = 50175-50DIW  Mean = 5.61 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 16 
 Blind Sample ID = 50175-50173  Mean = 4.62 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 15 
 Blind Sample ID = 50173-50DIW  Mean = 1.38 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 15 
 Blind Sample ID = 50171-50DIW  Mean = 6.13 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 12 
 Blind Sample ID = 50171-50173  Mean = 5.09 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 16 
 Blind Sample ID = 25213-75211  Mean = 5.07 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 14 
 Blind Sample ID = 25211-75209  Mean = 4.45 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 14 
 Blind Sample ID = 25209-75213  Mean = 5.99 
 % Relative Standard Deviation = 4.8 
 Number of Observations = 16 
 Blind Sample ID = 25209-75207  Mean = 3.34 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 14 
 Blind Sample ID = 25207-75205  Mean = 4.40 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 14 
 Blind Sample ID = 25205-75209  Mean = 18.73 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 14 
 Blind Sample ID = 25205-75201  Mean = 2.09 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 12 
 Blind Sample ID = 25203-75205  Mean = 6.95 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 14 
 Blind Sample ID = 25201-75203  Mean = 24.70 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 18 
 Blind Sample ID = 25201-75197  Mean = 19.73 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 20 
 Blind Sample ID = 25199-75201  Mean = 11.07 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 18 
 Blind Sample ID = 25197-75199  Mean = 19.11 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 13 
 Blind Sample ID = 25195-75197  Mean = 3.65 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 16 
 Blind Sample ID = 25193-75195  Mean = 4.29 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 16 
 Blind Sample ID = 25191-75193  Mean = 4.25 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 23 
 Blind Sample ID = 25183-75181  Mean = 4.18 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 15 
 Blind Sample ID = 25181-75179  Mean = 7.02 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 8 
 Blind Sample ID = 25179-75183  Mean = 6.74 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 16 
 Blind Sample ID = 25179-75177  Mean = 3.37 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 16 
 Blind Sample ID = 25177-75175  Mean = 2.23 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 20 
 Blind Sample ID = 25171-75175
The SGPlot Procedure



- Magnesium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00927, MCode: PLA15
Dates: 12/08/06 through 03/24/15
Open Data Set

 Mean = 3.86 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 3 
 Blind Sample ID = 75211-25DIW  Mean = 3.68 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 10 
 Blind Sample ID = 75209-25DIW  Mean = 4.74 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 8 
 Blind Sample ID = 75207-25DIW  Mean = 1.74 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 14 
 Blind Sample ID = 75205-25DIW  Mean = 0.97 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 6 
 Blind Sample ID = 75203-25DIW  Mean = 17.45 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 16 
 Blind Sample ID = 75201-25DIW  Mean = 10.36 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 6 
 Blind Sample ID = 75199-25201  Mean = 17.77 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 16 
 Blind Sample ID = 75197-25DIW  Mean = 8.12 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 5 
 Blind Sample ID = 75195-25197  Mean = 3.33 
 % Relative Standard Deviation = 4.8 
 Number of Observations = 16 
 Blind Sample ID = 75193-25DIW  Mean = 9.17 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 8 
 Blind Sample ID = 75193-25197  Mean = 2.70 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 16 
 Blind Sample ID = 75191-25DIW  Mean = 5.64 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 12 
 Blind Sample ID = 75189-25DIW  Mean = 6.67 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 8 
 Blind Sample ID = 75189-25193  Mean = 6.49 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 6 
 Blind Sample ID = 75189-25191  Mean = 8.99 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 12 
 Blind Sample ID = 75187-25DIW  Mean = 3.36 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 6 
 Blind Sample ID = 75185-25DIW  Mean = 5.59 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 13 
 Blind Sample ID = 75183-25DIW  Mean = 2.21 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 8 
 Blind Sample ID = 75181-25DIW  Mean = 3.42 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 4 
 Blind Sample ID = 75179-25DIW  Mean = 7.86 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 6 
 Blind Sample ID = 50187-50191  Mean = 10.04 
 % Relative Standard Deviation = 5.4 
 Number of Observations = 8 
 Blind Sample ID = 50187-50189  Mean = 10.13 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 6 
 Blind Sample ID = 50187-50183  Mean = 8.32 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 8 
 Blind Sample ID = 50185-50187  Mean = 5.95 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 8 
 Blind Sample ID = 50183-50185  Mean = 5.03 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 4 
 Blind Sample ID = 25213-75211  Mean = 5.90 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 8 
 Blind Sample ID = 25209-75207  Mean = 3.29 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 8 
 Blind Sample ID = 25207-75205  Mean = 4.27 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 8 
 Blind Sample ID = 25205-75209  Mean = 18.00 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 6 
 Blind Sample ID = 25205-75201  Mean = 2.07 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 6 
 Blind Sample ID = 25203-75205  Mean = 6.86 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 8 
 Blind Sample ID = 25201-75203  Mean = 23.70 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 6 
 Blind Sample ID = 25201-75197  Mean = 19.07 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 8 
 Blind Sample ID = 25199-75201  Mean = 10.57 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 6 
 Blind Sample ID = 25197-75199  Mean = 18.68 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 5 
 Blind Sample ID = 25195-75197  Mean = 3.61 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 6 
 Blind Sample ID = 25193-75195  Mean = 4.14 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 6 
 Blind Sample ID = 25191-75193  Mean = 4.06 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 15 
 Blind Sample ID = 25183-75181  Mean = 3.93 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 8 
 Blind Sample ID = 25181-75179
The SGPlot Procedure



- Magnesium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00927, MCode: PLO07
Dates: 06/09/15 through 09/30/22
Open Data Set

 Mean = 33.66 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 5 
 Blind Sample ID = T243  Mean = 6.85 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 8 
 Blind Sample ID = T241  Mean = 28.94 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 15 
 Blind Sample ID = T239  Mean = 7.51 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 10 
 Blind Sample ID = T237  Mean = 4.16 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 22 
 Blind Sample ID = T235  Mean = 6.68 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 17 
 Blind Sample ID = T233  Mean = 14.24 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 18 
 Blind Sample ID = T231  Mean = 23.12 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 21 
 Blind Sample ID = T229  Mean = 3.25 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 24 
 Blind Sample ID = T227  Mean = 15.35 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 18 
 Blind Sample ID = T225  Mean = 4.14 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 23 
 Blind Sample ID = T223  Mean = 3.80 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 18 
 Blind Sample ID = T221  Mean = 5.83 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 18 
 Blind Sample ID = T219  Mean = 7.63 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 24 
 Blind Sample ID = T217  Mean = 10.87 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 16 
 Blind Sample ID = T215  Mean = 5.28 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 12 
 Blind Sample ID = T211  Mean = 5.00 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = T209  Mean = 3.15 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 11 
 Blind Sample ID = 75213-25DIW  Mean = 4.06 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 5 
 Blind Sample ID = 75211-25DIW  Mean = 3.83 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 4 
 Blind Sample ID = 75209-25DIW  Mean = 5.02 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 4 
 Blind Sample ID = 25213-75211  Mean = 5.07 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 4 
 Blind Sample ID = 25211-75209  Mean = 4.30 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 4 
 Blind Sample ID = 25209-75213
The SGPlot Procedure



- Potassium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00935, MCode: PLO03
Dates: 10/09/04 through 09/28/22
Open Data Set

 Mean = 9.58 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 14 
 Blind Sample ID = T243  Mean = 1.17 
 % Relative Standard Deviation = 7.3 
 Number of Observations = 18 
 Blind Sample ID = T241  Mean = 8.78 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 35 
 Blind Sample ID = T239  Mean = 2.33 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 34 
 Blind Sample ID = T237  Mean = 1.46 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 56 
 Blind Sample ID = T235  Mean = 1.57 
 % Relative Standard Deviation = 5.3 
 Number of Observations = 44 
 Blind Sample ID = T233  Mean = 1.38 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 45 
 Blind Sample ID = T231  Mean = 4.47 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 52 
 Blind Sample ID = T229  Mean = 0.45 
 % Relative Standard Deviation = 15.2 
 Number of Observations = 47 
 Blind Sample ID = T227  Mean = 2.56 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 45 
 Blind Sample ID = T225  Mean = 1.00 
 % Relative Standard Deviation = 5.3 
 Number of Observations = 51 
 Blind Sample ID = T223  Mean = 1.88 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 42 
 Blind Sample ID = T221  Mean = 1.84 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 45 
 Blind Sample ID = T219  Mean = 2.57 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 54 
 Blind Sample ID = T217  Mean = 1.65 
 % Relative Standard Deviation = 5.6 
 Number of Observations = 36 
 Blind Sample ID = T215  Mean = 0.99 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 32 
 Blind Sample ID = T211  Mean = 2.74 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 20 
 Blind Sample ID = T209  Mean = 0.45 
 % Relative Standard Deviation = 14.6 
 Number of Observations = 8 
 Blind Sample ID = P64  Mean = 0.13 
 % Relative Standard Deviation = 17.8 
 Number of Observations = 4 
 Blind Sample ID = P63  Mean = 1.11 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = P62  Mean = 0.24 
 % Relative Standard Deviation = 13.3 
 Number of Observations = 4 
 Blind Sample ID = P61  Mean = 6.92 
 % Relative Standard Deviation = 5.4 
 Number of Observations = 36 
 Blind Sample ID = 75213-25DIW  Mean = 0.74 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 20 
 Blind Sample ID = 75211-25DIW  Mean = 1.99 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 35 
 Blind Sample ID = 75209-25DIW  Mean = 1.59 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 18 
 Blind Sample ID = 75207-25DIW  Mean = 0.58 
 % Relative Standard Deviation = 6.5 
 Number of Observations = 38 
 Blind Sample ID = 75205-25DIW  Mean = 0.93 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 20 
 Blind Sample ID = 75203-25DIW  Mean = 3.88 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 47 
 Blind Sample ID = 75201-25DIW  Mean = 2.68 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 22 
 Blind Sample ID = 75199-25201  Mean = 4.05 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 46 
 Blind Sample ID = 75197-25DIW  Mean = 2.05 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 24 
 Blind Sample ID = 75195-25197  Mean = 2.01 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 48 
 Blind Sample ID = 75193-25DIW  Mean = 3.34 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 26 
 Blind Sample ID = 75193-25197  Mean = 3.58 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 46 
 Blind Sample ID = 75191-25DIW  Mean = 2.91 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 48 
 Blind Sample ID = 75189-25DIW  Mean = 3.54 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 26 
 Blind Sample ID = 75189-25193  Mean = 4.06 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 22 
 Blind Sample ID = 75189-25191  Mean = 6.86 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 46 
 Blind Sample ID = 75187-25DIW  Mean = 2.08 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 21 
 Blind Sample ID = 75185-25DIW  Mean = 1.97 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 44 
 Blind Sample ID = 75183-25DIW  Mean = 1.16 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 18 
 Blind Sample ID = 75181-25DIW  Mean = 1.06 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 47 
 Blind Sample ID = 75179-25DIW  Mean = 2.87 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 24 
 Blind Sample ID = 75175-25DIW  Mean = 7.04 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 24 
 Blind Sample ID = 50187-50191  Mean = 6.41 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 18 
 Blind Sample ID = 50187-50189  Mean = 5.87 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 24 
 Blind Sample ID = 50187-50183  Mean = 5.87 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 24 
 Blind Sample ID = 50185-50187  Mean = 2.69 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 26 
 Blind Sample ID = 50183-50185  Mean = 2.44 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 24 
 Blind Sample ID = 50177-50179  Mean = 1.96 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 47 
 Blind Sample ID = 50175-50DIW  Mean = 3.91 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 23 
 Blind Sample ID = 50175-50173  Mean = 1.99 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 23 
 Blind Sample ID = 50173-50DIW  Mean = 1.44 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 23 
 Blind Sample ID = 50171-50DIW  Mean = 3.45 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 20 
 Blind Sample ID = 50171-50173  Mean = 2.97 
 % Relative Standard Deviation = 5.3 
 Number of Observations = 20 
 Blind Sample ID = 25213-75211  Mean = 2.27 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 18 
 Blind Sample ID = 25211-75209  Mean = 7.49 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 18 
 Blind Sample ID = 25209-75213  Mean = 2.31 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 18 
 Blind Sample ID = 25209-75207  Mean = 1.11 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 18 
 Blind Sample ID = 25207-75205  Mean = 2.17 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 18 
 Blind Sample ID = 25205-75209  Mean = 4.05 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 17 
 Blind Sample ID = 25205-75201  Mean = 0.90 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 18 
 Blind Sample ID = 25203-75205  Mean = 2.20 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 22 
 Blind Sample ID = 25201-75203  Mean = 5.24 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 22 
 Blind Sample ID = 25201-75197  Mean = 4.35 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 24 
 Blind Sample ID = 25199-75201  Mean = 2.72 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 24 
 Blind Sample ID = 25197-75199  Mean = 4.31 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 21 
 Blind Sample ID = 25195-75197  Mean = 1.41 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 24 
 Blind Sample ID = 25193-75195  Mean = 3.22 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 24 
 Blind Sample ID = 25191-75193  Mean = 1.82 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 31 
 Blind Sample ID = 25183-75181  Mean = 1.45 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 23 
 Blind Sample ID = 25181-75179  Mean = 2.32 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 15 
 Blind Sample ID = 25179-75183  Mean = 2.89 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 24 
 Blind Sample ID = 25179-75177  Mean = 3.77 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 24 
 Blind Sample ID = 25177-75175  Mean = 3.70 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 28 
 Blind Sample ID = 25171-75175
The SGPlot Procedure



- Potassium, FIL, ICP-OES, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00935, MCode: PLO02
Dates: 10/13/04 through 07/21/22
Open Data Set

 Mean = 0.19 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 6 
 Blind Sample ID = P73  Mean = 0.20 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 6 
 Blind Sample ID = P72  Mean = 0.14 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 15 
 Blind Sample ID = P71  Mean = 0.42 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 8 
 Blind Sample ID = P70  Mean = 0.01 
 % Relative Standard Deviation = 8.8 
 Number of Observations = 16 
 Blind Sample ID = P69  Mean = 0.16 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 8 
 Blind Sample ID = P68  Mean = 0.11 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 10 
 Blind Sample ID = P67  Mean = 0.09 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 4 
 Blind Sample ID = P63  Mean = 0.28 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 12 
 Blind Sample ID = P61  Mean = 0.12 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 8 
 Blind Sample ID = P60  Mean = 0.20 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 16 
 Blind Sample ID = P59  Mean = 0.88 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 7 
 Blind Sample ID = P58  Mean = 0.16 
 % Relative Standard Deviation = 5.8 
 Number of Observations = 15 
 Blind Sample ID = P57  Mean = 0.35 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 7 
 Blind Sample ID = P56  Mean = 0.12 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 14 
 Blind Sample ID = P55  Mean = 0.47 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 8 
 Blind Sample ID = P54  Mean = 0.08 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 16 
 Blind Sample ID = P53  Mean = 0.63 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 8 
 Blind Sample ID = P52  Mean = 0.23 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 23 
 Blind Sample ID = P51  Mean = 0.29 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 32 
 Blind Sample ID = P50  Mean = 0.12 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 31 
 Blind Sample ID = P49  Mean = 0.35 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 29 
 Blind Sample ID = P48  Mean = 0.18 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 14 
 Blind Sample ID = P47  Mean = 0.46 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 25 
 Blind Sample ID = P46  Mean = 0.18 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 31 
 Blind Sample ID = P45  Mean = 0.99 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 28 
 Blind Sample ID = P44  Mean = 0.18 
 % Relative Standard Deviation = 7.0 
 Number of Observations = 30 
 Blind Sample ID = P43  Mean = 0.33 
 % Relative Standard Deviation = 5.8 
 Number of Observations = 31 
 Blind Sample ID = P42  Mean = 0.07 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 24 
 Blind Sample ID = P41  Mean = 0.17 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 23 
 Blind Sample ID = P36
The SGPlot Procedure



- Potassium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00937, MCode: PLO01
Dates: 11/12/09 through 02/10/14
Open Data Set

 Mean = 0.57 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 8 
 Blind Sample ID = 75205-25DIW  Mean = 0.89 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 6 
 Blind Sample ID = 75203-25DIW  Mean = 3.74 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 16 
 Blind Sample ID = 75201-25DIW  Mean = 2.54 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 6 
 Blind Sample ID = 75199-25201  Mean = 3.81 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 16 
 Blind Sample ID = 75197-25DIW  Mean = 1.96 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 5 
 Blind Sample ID = 75195-25197  Mean = 1.94 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 16 
 Blind Sample ID = 75193-25DIW  Mean = 3.17 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 8 
 Blind Sample ID = 75193-25197  Mean = 3.39 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 8 
 Blind Sample ID = 75191-25DIW  Mean = 2.67 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 6 
 Blind Sample ID = 75189-25DIW  Mean = 3.35 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 8 
 Blind Sample ID = 75189-25193  Mean = 3.84 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 6 
 Blind Sample ID = 75189-25191  Mean = 3.89 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 6 
 Blind Sample ID = 25205-75201  Mean = 0.88 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 6 
 Blind Sample ID = 25203-75205  Mean = 2.13 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 8 
 Blind Sample ID = 25201-75203  Mean = 5.09 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 6 
 Blind Sample ID = 25201-75197  Mean = 4.19 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = 25199-75201  Mean = 2.62 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 6 
 Blind Sample ID = 25197-75199  Mean = 4.04 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 5 
 Blind Sample ID = 25195-75197  Mean = 1.35 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 6 
 Blind Sample ID = 25193-75195  Mean = 3.04 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 6 
 Blind Sample ID = 25191-75193
The SGPlot Procedure



- Silica, FIL, CFA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00955, MCode: CL064
Dates: 10/06/04 through 02/17/10
Open Data Set

 Mean = 4.25 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 8 
 Blind Sample ID = 75188-25DIW  Mean = 8.49 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = 75186-25DIW  Mean = 5.77 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 31 
 Blind Sample ID = 75184-25DIW  Mean = 7.01 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 5 
 Blind Sample ID = 75184-25188  Mean = 5.68 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 20 
 Blind Sample ID = 75182-25DIW  Mean = 5.17 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 46 
 Blind Sample ID = 75180-25DIW  Mean = 10.51 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 24 
 Blind Sample ID = 75178-25DIW  Mean = 3.91 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 47 
 Blind Sample ID = 75176-25DIW  Mean = 8.07 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 23 
 Blind Sample ID = 75174-25DIW  Mean = 9.13 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 45 
 Blind Sample ID = 75172-25DIW  Mean = 10.50 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 21 
 Blind Sample ID = 75172-25176  Mean = 8.75 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 21 
 Blind Sample ID = 75170-25DIW  Mean = 8.72 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 24 
 Blind Sample ID = 75166-25DIW  Mean = 2.66 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 47 
 Blind Sample ID = 50168-50DIW  Mean = 8.51 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 22 
 Blind Sample ID = 50168-50170  Mean = 7.30 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 24 
 Blind Sample ID = 50168-50164  Mean = 4.33 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 24 
 Blind Sample ID = 50164-50DIW  Mean = 10.87 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 24 
 Blind Sample ID = 50164-50166  Mean = 6.98 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 6 
 Blind Sample ID = 25186-75188  Mean = 10.61 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 8 
 Blind Sample ID = 25184-75186  Mean = 7.59 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 22 
 Blind Sample ID = 25184-75182  Mean = 7.03 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 22 
 Blind Sample ID = 25182-75180  Mean = 7.48 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 22 
 Blind Sample ID = 25180-75184  Mean = 12.32 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 24 
 Blind Sample ID = 25180-75178  Mean = 5.69 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 23 
 Blind Sample ID = 25180-75176  Mean = 7.50 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 23 
 Blind Sample ID = 25178-75176  Mean = 6.62 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 22 
 Blind Sample ID = 25174-75176  Mean = 11.04 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 22 
 Blind Sample ID = 25172-75174  Mean = 11.66 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 22 
 Blind Sample ID = 25172-75170  Mean = 7.17 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 24 
 Blind Sample ID = 25172-75168  Mean = 10.13 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 25 
 Blind Sample ID = 25168-75166
The SGPlot Procedure



- Silica, FIL, DA -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00955, MCode: CL151
Dates: 03/15/10 through 03/29/22
Open Data Set

 Mean = 7.91 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 6 
 Blind Sample ID = M232  Mean = 10.21 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 6 
 Blind Sample ID = M230  Mean = 10.61 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 9 
 Blind Sample ID = M226  Mean = 11.31 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 12 
 Blind Sample ID = M224  Mean = 6.16 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 11 
 Blind Sample ID = M222  Mean = 6.55 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 11 
 Blind Sample ID = M220  Mean = 23.61 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 12 
 Blind Sample ID = M218  Mean = 15.18 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 10 
 Blind Sample ID = M216  Mean = 9.26 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 12 
 Blind Sample ID = M214  Mean = 6.02 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 12 
 Blind Sample ID = M212  Mean = 8.85 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 12 
 Blind Sample ID = M210  Mean = 6.80 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 4 
 Blind Sample ID = M206  Mean = 11.81 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 4 
 Blind Sample ID = M204  Mean = 6.17 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 4 
 Blind Sample ID = M202  Mean = 5.20 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 8 
 Blind Sample ID = 75206-25DIW  Mean = 8.88 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 4 
 Blind Sample ID = 75204-25DIW  Mean = 4.76 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 10 
 Blind Sample ID = 75202-25DIW  Mean = 6.38 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 6 
 Blind Sample ID = 75200-25DIW  Mean = 5.66 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 11 
 Blind Sample ID = 75198-25DIW  Mean = 4.48 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 8 
 Blind Sample ID = 75196-25DIW  Mean = 9.99 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 32 
 Blind Sample ID = 75194-25DIW  Mean = 5.90 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 40 
 Blind Sample ID = 75192-25DIW  Mean = 8.60 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 28 
 Blind Sample ID = 75190-25DIW  Mean = 10.50 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 24 
 Blind Sample ID = 75190-25192  Mean = 4.22 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 32 
 Blind Sample ID = 75188-25DIW  Mean = 7.11 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 21 
 Blind Sample ID = 75188-25190  Mean = 8.17 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 8 
 Blind Sample ID = 75186-25DIW  Mean = 5.42 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 8 
 Blind Sample ID = 75184-25DIW  Mean = 6.89 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 15 
 Blind Sample ID = 75184-25188  Mean = 10.74 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 4 
 Blind Sample ID = 25206-75204  Mean = 7.83 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 4 
 Blind Sample ID = 25204-75202  Mean = 6.72 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 4 
 Blind Sample ID = 25202-75206  Mean = 7.36 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 6 
 Blind Sample ID = 25202-75198  Mean = 6.89 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 6 
 Blind Sample ID = 25200-75202  Mean = 8.48 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 6 
 Blind Sample ID = 25198-75200  Mean = 11.76 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 8 
 Blind Sample ID = 25198-75194  Mean = 7.22 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 8 
 Blind Sample ID = 25196-75198  Mean = 7.72 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 8 
 Blind Sample ID = 25194-75196  Mean = 9.10 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 14 
 Blind Sample ID = 25194-75192  Mean = 10.71 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 16 
 Blind Sample ID = 25192-75190  Mean = 12.69 
 % Relative Standard Deviation = 5.0 
 Number of Observations = 16 
 Blind Sample ID = 25190-75194  Mean = 7.32 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 24 
 Blind Sample ID = 25188-75192  Mean = 6.73 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 11 
 Blind Sample ID = 25186-75188  Mean = 9.88 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 8 
 Blind Sample ID = 25184-75186
The SGPlot Procedure



- Silica, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00955, MCode: PLA11
Dates: 10/09/04 through 09/28/22
Open Data Set

 Mean = 7.17 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 14 
 Blind Sample ID = T243  Mean = 6.65 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 19 
 Blind Sample ID = T241  Mean = 7.46 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 35 
 Blind Sample ID = T239  Mean = 8.46 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 34 
 Blind Sample ID = T237  Mean = 14.34 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 56 
 Blind Sample ID = T235  Mean = 11.96 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 44 
 Blind Sample ID = T233  Mean = 5.44 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 47 
 Blind Sample ID = T231  Mean = 14.92 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 54 
 Blind Sample ID = T229  Mean = 4.86 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 50 
 Blind Sample ID = T227  Mean = 15.37 
 % Relative Standard Deviation = 4.9 
 Number of Observations = 51 
 Blind Sample ID = T225  Mean = 7.88 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 59 
 Blind Sample ID = T223  Mean = 12.97 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 48 
 Blind Sample ID = T221  Mean = 9.12 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 49 
 Blind Sample ID = T219  Mean = 9.63 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 60 
 Blind Sample ID = T217  Mean = 2.36 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 37 
 Blind Sample ID = T215  Mean = 6.72 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 34 
 Blind Sample ID = T211  Mean = 12.93 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 20 
 Blind Sample ID = T209  Mean = 4.68 
 % Relative Standard Deviation = 5.3 
 Number of Observations = 36 
 Blind Sample ID = 75213-25DIW  Mean = 4.84 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 20 
 Blind Sample ID = 75211-25DIW  Mean = 9.22 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 35 
 Blind Sample ID = 75209-25DIW  Mean = 6.03 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 18 
 Blind Sample ID = 75207-25DIW  Mean = 6.46 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 38 
 Blind Sample ID = 75205-25DIW  Mean = 3.56 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 20 
 Blind Sample ID = 75203-25DIW  Mean = 9.60 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 46 
 Blind Sample ID = 75201-25DIW  Mean = 7.39 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 22 
 Blind Sample ID = 75199-25201  Mean = 10.94 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 46 
 Blind Sample ID = 75197-25DIW  Mean = 7.31 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 24 
 Blind Sample ID = 75195-25197  Mean = 10.06 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 48 
 Blind Sample ID = 75193-25DIW  Mean = 14.00 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 26 
 Blind Sample ID = 75193-25197  Mean = 3.48 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 46 
 Blind Sample ID = 75191-25DIW  Mean = 9.09 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 48 
 Blind Sample ID = 75189-25DIW  Mean = 12.39 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 26 
 Blind Sample ID = 75189-25193  Mean = 10.17 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 22 
 Blind Sample ID = 75189-25191  Mean = 4.89 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 46 
 Blind Sample ID = 75187-25DIW  Mean = 7.72 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 21 
 Blind Sample ID = 75185-25DIW  Mean = 6.29 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 44 
 Blind Sample ID = 75183-25DIW  Mean = 9.96 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 18 
 Blind Sample ID = 75181-25DIW  Mean = 11.22 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 47 
 Blind Sample ID = 75179-25DIW  Mean = 4.25 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 24 
 Blind Sample ID = 75175-25DIW  Mean = 5.66 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 24 
 Blind Sample ID = 50187-50191  Mean = 9.42 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 18 
 Blind Sample ID = 50187-50189  Mean = 7.42 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 24 
 Blind Sample ID = 50187-50183  Mean = 8.33 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 24 
 Blind Sample ID = 50185-50187  Mean = 9.28 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 26 
 Blind Sample ID = 50183-50185  Mean = 12.75 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 24 
 Blind Sample ID = 50177-50179  Mean = 2.82 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 47 
 Blind Sample ID = 50175-50DIW  Mean = 8.57 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 23 
 Blind Sample ID = 50175-50173  Mean = 5.75 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 23 
 Blind Sample ID = 50173-50DIW  Mean = 1.78 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 23 
 Blind Sample ID = 50171-50DIW  Mean = 7.55 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 20 
 Blind Sample ID = 50171-50173  Mean = 6.35 
 % Relative Standard Deviation = 5.4 
 Number of Observations = 19 
 Blind Sample ID = 25213-75211  Mean = 10.93 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 18 
 Blind Sample ID = 25211-75209  Mean = 7.65 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 18 
 Blind Sample ID = 25209-75213  Mean = 9.07 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 18 
 Blind Sample ID = 25209-75207  Mean = 8.55 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 18 
 Blind Sample ID = 25207-75205  Mean = 11.40 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 18 
 Blind Sample ID = 25205-75209  Mean = 11.54 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 17 
 Blind Sample ID = 25205-75201  Mean = 7.63 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 18 
 Blind Sample ID = 25203-75205  Mean = 6.60 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 22 
 Blind Sample ID = 25201-75203  Mean = 13.97 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 22 
 Blind Sample ID = 25201-75197  Mean = 11.23 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 24 
 Blind Sample ID = 25199-75201  Mean = 7.63 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 24 
 Blind Sample ID = 25197-75199  Mean = 11.84 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 21 
 Blind Sample ID = 25195-75197  Mean = 7.26 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 24 
 Blind Sample ID = 25193-75195  Mean = 11.25 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 24 
 Blind Sample ID = 25191-75193  Mean = 12.08 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 31 
 Blind Sample ID = 25183-75181  Mean = 14.44 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 23 
 Blind Sample ID = 25181-75179  Mean = 9.92 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 16 
 Blind Sample ID = 25179-75183  Mean = 11.83 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 24 
 Blind Sample ID = 25179-75177  Mean = 6.91 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 24 
 Blind Sample ID = 25177-75175  Mean = 5.21 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 28 
 Blind Sample ID = 25171-75175
The SGPlot Procedure



- Silica, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00956, MCode: PLA15
Dates: 02/29/12 through 03/24/15
Open Data Set

 Mean = 4.59 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 3 
 Blind Sample ID = 75211-25DIW  Mean = 9.10 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 10 
 Blind Sample ID = 75209-25DIW  Mean = 5.88 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = 75207-25DIW  Mean = 6.34 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 14 
 Blind Sample ID = 75205-25DIW  Mean = 3.54 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 6 
 Blind Sample ID = 75203-25DIW  Mean = 9.14 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 11 
 Blind Sample ID = 75201-25DIW  Mean = 6.95 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 6 
 Blind Sample ID = 75199-25201  Mean = 6.00 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 4 
 Blind Sample ID = 25213-75211  Mean = 8.85 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 8 
 Blind Sample ID = 25209-75207  Mean = 8.30 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 8 
 Blind Sample ID = 25207-75205  Mean = 11.11 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 8 
 Blind Sample ID = 25205-75209  Mean = 11.27 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 6 
 Blind Sample ID = 25205-75201  Mean = 7.56 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 6 
 Blind Sample ID = 25203-75205  Mean = 6.54 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 7 
 Blind Sample ID = 25201-75203  Mean = 12.71 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 6 
 Blind Sample ID = 25201-75197
The SGPlot Procedure



- Silica, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00956, MCode: PLO07
Dates: 05/28/15 through 09/30/22
Open Data Set

 Mean = 7.21 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 3 
 Blind Sample ID = T243  Mean = 6.69 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 4 
 Blind Sample ID = T241  Mean = 7.31 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 8 
 Blind Sample ID = T239  Mean = 8.35 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 6 
 Blind Sample ID = T237  Mean = 13.85 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 12 
 Blind Sample ID = T235  Mean = 11.73 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 11 
 Blind Sample ID = T233  Mean = 5.42 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 12 
 Blind Sample ID = T231  Mean = 14.50 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 10 
 Blind Sample ID = T229  Mean = 4.81 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 12 
 Blind Sample ID = T227  Mean = 15.02 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 12 
 Blind Sample ID = T225  Mean = 7.88 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 11 
 Blind Sample ID = T223  Mean = 12.99 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 12 
 Blind Sample ID = T221  Mean = 8.92 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 14 
 Blind Sample ID = T219  Mean = 9.39 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 16 
 Blind Sample ID = T217  Mean = 2.28 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 11 
 Blind Sample ID = T215  Mean = 6.49 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 10 
 Blind Sample ID = T211  Mean = 12.65 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 8 
 Blind Sample ID = T209  Mean = 4.44 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 11 
 Blind Sample ID = 75213-25DIW  Mean = 4.65 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 5 
 Blind Sample ID = 75211-25DIW  Mean = 9.16 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 4 
 Blind Sample ID = 75209-25DIW  Mean = 6.05 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 4 
 Blind Sample ID = 25213-75211  Mean = 10.67 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 4 
 Blind Sample ID = 25211-75209  Mean = 7.27 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 4 
 Blind Sample ID = 25209-75213
The SGPlot Procedure



- Sodium, FIL, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00930, MCode: PLA11
Dates: 10/09/04 through 09/28/22
Open Data Set

 Mean = 53.67 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 12 
 Blind Sample ID = T243  Mean = 16.27 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 16 
 Blind Sample ID = T241  Mean = 105.88 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 31 
 Blind Sample ID = T239  Mean = 21.28 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 26 
 Blind Sample ID = T237  Mean = 27.31 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 45 
 Blind Sample ID = T235  Mean = 16.31 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 38 
 Blind Sample ID = T233  Mean = 34.68 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 41 
 Blind Sample ID = T231  Mean = 25.49 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 43 
 Blind Sample ID = T229  Mean = 6.43 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 44 
 Blind Sample ID = T227  Mean = 115.61 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 41 
 Blind Sample ID = T225  Mean = 7.80 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 47 
 Blind Sample ID = T223  Mean = 17.70 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 42 
 Blind Sample ID = T221  Mean = 20.01 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 42 
 Blind Sample ID = T219  Mean = 20.58 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 48 
 Blind Sample ID = T217  Mean = 29.39 
 % Relative Standard Deviation = 6.0 
 Number of Observations = 32 
 Blind Sample ID = T215  Mean = 10.06 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 27 
 Blind Sample ID = T211  Mean = 21.43 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 16 
 Blind Sample ID = T209  Mean = 0.78 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 6 
 Blind Sample ID = P73  Mean = 2.13 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 6 
 Blind Sample ID = P72  Mean = 1.37 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 8 
 Blind Sample ID = P70  Mean = 0.41 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 6 
 Blind Sample ID = P68  Mean = 2.63 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 7 
 Blind Sample ID = P66  Mean = 0.10 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 6 
 Blind Sample ID = P65  Mean = 1.45 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 8 
 Blind Sample ID = P64  Mean = 0.18 
 % Relative Standard Deviation = 17.0 
 Number of Observations = 14 
 Blind Sample ID = P63  Mean = 2.23 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 8 
 Blind Sample ID = P62  Mean = 4.83 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 16 
 Blind Sample ID = P61  Mean = 2.26 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 8 
 Blind Sample ID = P60  Mean = 0.17 
 % Relative Standard Deviation = 11.5 
 Number of Observations = 16 
 Blind Sample ID = P59  Mean = 1.63 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 8 
 Blind Sample ID = P58  Mean = 0.39 
 % Relative Standard Deviation = 7.6 
 Number of Observations = 16 
 Blind Sample ID = P57  Mean = 0.76 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 8 
 Blind Sample ID = P56  Mean = 0.73 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 14 
 Blind Sample ID = P55  Mean = 0.31 
 % Relative Standard Deviation = 6.6 
 Number of Observations = 8 
 Blind Sample ID = P54  Mean = 0.32 
 % Relative Standard Deviation = 6.9 
 Number of Observations = 16 
 Blind Sample ID = P53  Mean = 0.22 
 % Relative Standard Deviation = 7.4 
 Number of Observations = 8 
 Blind Sample ID = P52  Mean = 1.25 
 % Relative Standard Deviation = 6.0 
 Number of Observations = 24 
 Blind Sample ID = P51  Mean = 0.59 
 % Relative Standard Deviation = 4.8 
 Number of Observations = 32 
 Blind Sample ID = P50  Mean = 0.54 
 % Relative Standard Deviation = 5.4 
 Number of Observations = 31 
 Blind Sample ID = P49  Mean = 1.03 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 30 
 Blind Sample ID = P48  Mean = 1.69 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 14 
 Blind Sample ID = P47  Mean = 0.65 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 26 
 Blind Sample ID = P46  Mean = 0.13 
 % Relative Standard Deviation = 13.1 
 Number of Observations = 31 
 Blind Sample ID = P45  Mean = 0.99 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 27 
 Blind Sample ID = P44  Mean = 0.24 
 % Relative Standard Deviation = 9.0 
 Number of Observations = 30 
 Blind Sample ID = P43  Mean = 0.32 
 % Relative Standard Deviation = 14.4 
 Number of Observations = 31 
 Blind Sample ID = P42  Mean = 0.50 
 % Relative Standard Deviation = 6.3 
 Number of Observations = 23 
 Blind Sample ID = P41  Mean = 0.38 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 24 
 Blind Sample ID = P36  Mean = 30.08 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 27 
 Blind Sample ID = 75213-25DIW  Mean = 7.85 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 16 
 Blind Sample ID = 75211-25DIW  Mean = 15.85 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 27 
 Blind Sample ID = 75209-25DIW  Mean = 16.39 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 14 
 Blind Sample ID = 75207-25DIW  Mean = 6.27 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 29 
 Blind Sample ID = 75205-25DIW  Mean = 8.15 
 % Relative Standard Deviation = 4.3 
 Number of Observations = 12 
 Blind Sample ID = 75203-25DIW  Mean = 36.60 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 37 
 Blind Sample ID = 75201-25DIW  Mean = 18.15 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 18 
 Blind Sample ID = 75199-25201  Mean = 28.87 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 32 
 Blind Sample ID = 75197-25DIW  Mean = 14.53 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 16 
 Blind Sample ID = 75195-25197  Mean = 15.88 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 32 
 Blind Sample ID = 75193-25DIW  Mean = 25.61 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 18 
 Blind Sample ID = 75193-25197  Mean = 7.73 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 30 
 Blind Sample ID = 75191-25DIW  Mean = 36.87 
 % Relative Standard Deviation = 5.1 
 Number of Observations = 32 
 Blind Sample ID = 75189-25DIW  Mean = 41.37 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 18 
 Blind Sample ID = 75189-25193  Mean = 38.77 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 14 
 Blind Sample ID = 75189-25191  Mean = 13.64 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 29 
 Blind Sample ID = 75187-25DIW  Mean = 11.00 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 14 
 Blind Sample ID = 75185-25DIW  Mean = 9.65 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 29 
 Blind Sample ID = 75183-25DIW  Mean = 11.53 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 11 
 Blind Sample ID = 75181-25DIW  Mean = 19.82 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 32 
 Blind Sample ID = 75179-25DIW  Mean = 6.54 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 16 
 Blind Sample ID = 75175-25DIW  Mean = 14.38 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 16 
 Blind Sample ID = 50187-50191  Mean = 33.82 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 18 
 Blind Sample ID = 50187-50189  Mean = 15.53 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 16 
 Blind Sample ID = 50187-50183  Mean = 16.47 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 16 
 Blind Sample ID = 50185-50187  Mean = 13.77 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 18 
 Blind Sample ID = 50183-50185  Mean = 32.36 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 16 
 Blind Sample ID = 50177-50179  Mean = 4.37 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 31 
 Blind Sample ID = 50175-50DIW  Mean = 22.64 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 16 
 Blind Sample ID = 50175-50173  Mean = 18.43 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 15 
 Blind Sample ID = 50173-50DIW  Mean = 4.34 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 16 
 Blind Sample ID = 50171-50DIW  Mean = 22.68 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 12 
 Blind Sample ID = 50171-50173  Mean = 17.42 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 16 
 Blind Sample ID = 25213-75211  Mean = 18.47 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 14 
 Blind Sample ID = 25211-75209  Mean = 35.13 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 14 
 Blind Sample ID = 25209-75213  Mean = 21.88 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 16 
 Blind Sample ID = 25209-75207  Mean = 11.58 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 14 
 Blind Sample ID = 25207-75205  Mean = 17.30 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 14 
 Blind Sample ID = 25205-75209  Mean = 36.81 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 14 
 Blind Sample ID = 25205-75201  Mean = 8.93 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 12 
 Blind Sample ID = 25203-75205  Mean = 20.22 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 14 
 Blind Sample ID = 25201-75203  Mean = 40.90 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 18 
 Blind Sample ID = 25201-75197  Mean = 38.22 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 20 
 Blind Sample ID = 25199-75201  Mean = 15.59 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 18 
 Blind Sample ID = 25197-75199  Mean = 30.13 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 13 
 Blind Sample ID = 25195-75197  Mean = 10.39 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 16 
 Blind Sample ID = 25193-75195  Mean = 18.11 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 16 
 Blind Sample ID = 25191-75193  Mean = 14.84 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 23 
 Blind Sample ID = 25183-75181  Mean = 23.80 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 15 
 Blind Sample ID = 25181-75179  Mean = 16.52 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 8 
 Blind Sample ID = 25179-75183  Mean = 34.83 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 16 
 Blind Sample ID = 25179-75177  Mean = 15.83 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 16 
 Blind Sample ID = 25177-75175  Mean = 8.67 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 20 
 Blind Sample ID = 25171-75175
The SGPlot Procedure



- Sodium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00929, MCode: PLA15
Dates: 10/30/07 through 03/24/15
Open Data Set

 Mean = 7.23 
 % Relative Standard Deviation = 6.3 
 Number of Observations = 3 
 Blind Sample ID = 75211-25DIW  Mean = 15.03 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 10 
 Blind Sample ID = 75209-25DIW  Mean = 16.31 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = 75207-25DIW  Mean = 6.17 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 14 
 Blind Sample ID = 75205-25DIW  Mean = 7.96 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 6 
 Blind Sample ID = 75203-25DIW  Mean = 35.12 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 16 
 Blind Sample ID = 75201-25DIW  Mean = 17.14 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 6 
 Blind Sample ID = 75199-25201  Mean = 27.54 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 16 
 Blind Sample ID = 75197-25DIW  Mean = 14.00 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 6 
 Blind Sample ID = 75195-25197  Mean = 15.34 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 16 
 Blind Sample ID = 75193-25DIW  Mean = 24.24 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 8 
 Blind Sample ID = 75193-25197  Mean = 7.47 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 16 
 Blind Sample ID = 75191-25DIW  Mean = 35.41 
 % Relative Standard Deviation = 5.0 
 Number of Observations = 12 
 Blind Sample ID = 75189-25DIW  Mean = 41.24 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 8 
 Blind Sample ID = 75189-25193  Mean = 39.01 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 6 
 Blind Sample ID = 75189-25191  Mean = 13.22 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 12 
 Blind Sample ID = 75187-25DIW  Mean = 10.86 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 6 
 Blind Sample ID = 75185-25DIW  Mean = 9.61 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 6 
 Blind Sample ID = 75183-25DIW  Mean = 13.88 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 6 
 Blind Sample ID = 50187-50191  Mean = 33.77 
 % Relative Standard Deviation = 6.4 
 Number of Observations = 8 
 Blind Sample ID = 50187-50189  Mean = 15.15 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 6 
 Blind Sample ID = 50187-50183  Mean = 16.24 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 8 
 Blind Sample ID = 50185-50187  Mean = 13.58 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 8 
 Blind Sample ID = 50183-50185  Mean = 16.62 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 4 
 Blind Sample ID = 25213-75211  Mean = 21.33 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 8 
 Blind Sample ID = 25209-75207  Mean = 11.56 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 8 
 Blind Sample ID = 25207-75205  Mean = 17.35 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 8 
 Blind Sample ID = 25205-75209  Mean = 37.14 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 6 
 Blind Sample ID = 25205-75201  Mean = 8.88 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 6 
 Blind Sample ID = 25203-75205  Mean = 19.59 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 8 
 Blind Sample ID = 25201-75203  Mean = 39.54 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 6 
 Blind Sample ID = 25201-75197  Mean = 36.94 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 8 
 Blind Sample ID = 25199-75201  Mean = 15.02 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 6 
 Blind Sample ID = 25197-75199  Mean = 29.08 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 5 
 Blind Sample ID = 25195-75197  Mean = 9.94 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 6 
 Blind Sample ID = 25193-75195  Mean = 18.00 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 6 
 Blind Sample ID = 25191-75193
The SGPlot Procedure



- Sodium, UNF, ICP-OES -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00929, MCode: PLO07
Dates: 05/30/15 through 09/30/22
Open Data Set

 Mean = 53.11 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 3 
 Blind Sample ID = T243  Mean = 16.22 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 4 
 Blind Sample ID = T241  Mean = 105.69 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 8 
 Blind Sample ID = T239  Mean = 21.19 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 6 
 Blind Sample ID = T237  Mean = 26.60 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 12 
 Blind Sample ID = T235  Mean = 16.28 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 11 
 Blind Sample ID = T233  Mean = 34.78 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 12 
 Blind Sample ID = T231  Mean = 25.54 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 10 
 Blind Sample ID = T229  Mean = 6.53 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 12 
 Blind Sample ID = T227  Mean = 114.54 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 12 
 Blind Sample ID = T225  Mean = 7.96 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 11 
 Blind Sample ID = T223  Mean = 17.87 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 12 
 Blind Sample ID = T221  Mean = 19.95 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 14 
 Blind Sample ID = T219  Mean = 20.60 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 16 
 Blind Sample ID = T217  Mean = 29.18 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 11 
 Blind Sample ID = T215  Mean = 10.02 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 10 
 Blind Sample ID = T211  Mean = 20.98 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 8 
 Blind Sample ID = T209  Mean = 29.25 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 11 
 Blind Sample ID = 75213-25DIW  Mean = 7.62 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 5 
 Blind Sample ID = 75211-25DIW  Mean = 16.04 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 4 
 Blind Sample ID = 75209-25DIW  Mean = 17.09 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 4 
 Blind Sample ID = 25213-75211  Mean = 18.38 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 4 
 Blind Sample ID = 25211-75209  Mean = 34.24 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 4 
 Blind Sample ID = 25209-75213
The SGPlot Procedure



- Solids @105 Deg C, UNF, GRAV -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00500, MCode: ROE12
Dates: 11/17/04 through 09/16/22
Open Data Set

 Mean = 265.81 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 7 
 Blind Sample ID = M232  Mean = 151.14 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 8 
 Blind Sample ID = M230  Mean = 106.05 
 % Relative Standard Deviation = 6.0 
 Number of Observations = 6 
 Blind Sample ID = M228  Mean = 129.30 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 11 
 Blind Sample ID = M226  Mean = 63.76 
 % Relative Standard Deviation = 11.1 
 Number of Observations = 6 
 Blind Sample ID = M224  Mean = 90.82 
 % Relative Standard Deviation = 6.6 
 Number of Observations = 5 
 Blind Sample ID = M222  Mean = 125.70 
 % Relative Standard Deviation = 5.0 
 Number of Observations = 12 
 Blind Sample ID = M220  Mean = 490.41 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 12 
 Blind Sample ID = M218  Mean = 96.51 
 % Relative Standard Deviation = 7.9 
 Number of Observations = 7 
 Blind Sample ID = M216  Mean = 226.50 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 14 
 Blind Sample ID = M214  Mean = 57.33 
 % Relative Standard Deviation = 6.9 
 Number of Observations = 8 
 Blind Sample ID = M212  Mean = 72.63 
 % Relative Standard Deviation = 5.6 
 Number of Observations = 9 
 Blind Sample ID = M210  Mean = 260.93 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 14 
 Blind Sample ID = M208  Mean = 136.36 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 6 
 Blind Sample ID = M206  Mean = 147.87 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 8 
 Blind Sample ID = M204  Mean = 53.49 
 % Relative Standard Deviation = 7.5 
 Number of Observations = 4 
 Blind Sample ID = M202  Mean = 106.26 
 % Relative Standard Deviation = 9.2 
 Number of Observations = 16 
 Blind Sample ID = 75206-25DIW  Mean = 110.40 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 4 
 Blind Sample ID = 75204-25DIW  Mean = 36.47 
 % Relative Standard Deviation = 24.5 
 Number of Observations = 12 
 Blind Sample ID = 75202-25DIW  Mean = 66.43 
 % Relative Standard Deviation = 12.4 
 Number of Observations = 4 
 Blind Sample ID = 75200-25DIW  Mean = 63.00 
 % Relative Standard Deviation = 7.8 
 Number of Observations = 8 
 Blind Sample ID = 75198-25DIW  Mean = 152.15 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 4 
 Blind Sample ID = 75196-25DIW  Mean = 138.68 
 % Relative Standard Deviation = 4.9 
 Number of Observations = 12 
 Blind Sample ID = 75194-25DIW  Mean = 44.11 
 % Relative Standard Deviation = 20.1 
 Number of Observations = 16 
 Blind Sample ID = 75192-25DIW  Mean = 88.20 
 % Relative Standard Deviation = 6.5 
 Number of Observations = 16 
 Blind Sample ID = 75190-25DIW  Mean = 105.16 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 4 
 Blind Sample ID = 75190-25192  Mean = 144.34 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 16 
 Blind Sample ID = 75188-25DIW  Mean = 169.52 
 % Relative Standard Deviation = 10.3 
 Number of Observations = 4 
 Blind Sample ID = 75188-25190  Mean = 85.71 
 % Relative Standard Deviation = 14.1 
 Number of Observations = 4 
 Blind Sample ID = 75186-25DIW  Mean = 75.83 
 % Relative Standard Deviation = 6.4 
 Number of Observations = 15 
 Blind Sample ID = 75184-25DIW  Mean = 124.63 
 % Relative Standard Deviation = 6.1 
 Number of Observations = 4 
 Blind Sample ID = 75184-25188  Mean = 76.45 
 % Relative Standard Deviation = 5.4 
 Number of Observations = 4 
 Blind Sample ID = 75182-25DIW  Mean = 131.29 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 15 
 Blind Sample ID = 75180-25DIW  Mean = 318.58 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 8 
 Blind Sample ID = 75178-25DIW  Mean = 67.84 
 % Relative Standard Deviation = 5.4 
 Number of Observations = 14 
 Blind Sample ID = 75176-25DIW  Mean = 100.25 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 8 
 Blind Sample ID = 75174-25DIW  Mean = 70.28 
 % Relative Standard Deviation = 8.3 
 Number of Observations = 12 
 Blind Sample ID = 75172-25DIW  Mean = 98.51 
 % Relative Standard Deviation = 9.8 
 Number of Observations = 4 
 Blind Sample ID = 75172-25176  Mean = 50.36 
 % Relative Standard Deviation = 8.5 
 Number of Observations = 4 
 Blind Sample ID = 75170-25DIW  Mean = 203.16 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 4 
 Blind Sample ID = 75166-25DIW  Mean = 52.64 
 % Relative Standard Deviation = 9.7 
 Number of Observations = 11 
 Blind Sample ID = 50168-50DIW  Mean = 85.11 
 % Relative Standard Deviation = 7.0 
 Number of Observations = 4 
 Blind Sample ID = 50168-50170  Mean = 151.65 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 4 
 Blind Sample ID = 50168-50164  Mean = 97.03 
 % Relative Standard Deviation = 7.9 
 Number of Observations = 8 
 Blind Sample ID = 50164-50DIW  Mean = 230.23 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 4 
 Blind Sample ID = 50164-50166  Mean = 142.59 
 % Relative Standard Deviation = 6.3 
 Number of Observations = 4 
 Blind Sample ID = 25206-75204  Mean = 75.14 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 8 
 Blind Sample ID = 25204-75202  Mean = 114.76 
 % Relative Standard Deviation = 4.0 
 Number of Observations = 4 
 Blind Sample ID = 25202-75206  Mean = 90.75 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 4 
 Blind Sample ID = 25198-75200  Mean = 166.21 
 % Relative Standard Deviation = 6.1 
 Number of Observations = 4 
 Blind Sample ID = 25198-75194  Mean = 122.11 
 % Relative Standard Deviation = 9.5 
 Number of Observations = 8 
 Blind Sample ID = 25196-75198  Mean = 192.70 
 % Relative Standard Deviation = 4.8 
 Number of Observations = 4 
 Blind Sample ID = 25194-75196  Mean = 97.13 
 % Relative Standard Deviation = 15.4 
 Number of Observations = 4 
 Blind Sample ID = 25194-75192  Mean = 107.40 
 % Relative Standard Deviation = 7.5 
 Number of Observations = 4 
 Blind Sample ID = 25192-75190  Mean = 171.61 
 % Relative Standard Deviation = 5.4 
 Number of Observations = 4 
 Blind Sample ID = 25190-75194  Mean = 78.69 
 % Relative Standard Deviation = 14.6 
 Number of Observations = 3 
 Blind Sample ID = 25188-75192  Mean = 172.91 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 4 
 Blind Sample ID = 25186-75188  Mean = 119.44 
 % Relative Standard Deviation = 5.1 
 Number of Observations = 8 
 Blind Sample ID = 25184-75186  Mean = 95.07 
 % Relative Standard Deviation = 5.5 
 Number of Observations = 6 
 Blind Sample ID = 25184-75182  Mean = 151.70 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 4 
 Blind Sample ID = 25182-75180  Mean = 119.87 
 % Relative Standard Deviation = 10.8 
 Number of Observations = 4 
 Blind Sample ID = 25180-75184  Mean = 372.48 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 4 
 Blind Sample ID = 25180-75178  Mean = 117.95 
 % Relative Standard Deviation = 6.0 
 Number of Observations = 4 
 Blind Sample ID = 25180-75176  Mean = 175.27 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 4 
 Blind Sample ID = 25178-75176  Mean = 96.32 
 % Relative Standard Deviation = 7.5 
 Number of Observations = 4 
 Blind Sample ID = 25174-75176  Mean = 127.45 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 4 
 Blind Sample ID = 25172-75174  Mean = 79.20 
 % Relative Standard Deviation = 6.6 
 Number of Observations = 4 
 Blind Sample ID = 25172-75170  Mean = 108.26 
 % Relative Standard Deviation = 5.1 
 Number of Observations = 4 
 Blind Sample ID = 25172-75168  Mean = 223.42 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 8 
 Blind Sample ID = 25168-75166
The SGPlot Procedure



- Solids, ROE@180 Deg C (TDS), FIL, GRAV -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 70300, MCode: ROE10
Dates: 11/12/04 through 04/18/22
Open Data Set

 Mean = 122.39 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 3 
 Blind Sample ID = M234  Mean = 265.36 
 % Relative Standard Deviation = 7.2 
 Number of Observations = 8 
 Blind Sample ID = M232  Mean = 144.82 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 11 
 Blind Sample ID = M230  Mean = 97.58 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 13 
 Blind Sample ID = M228  Mean = 122.53 
 % Relative Standard Deviation = 8.8 
 Number of Observations = 20 
 Blind Sample ID = M226  Mean = 63.51 
 % Relative Standard Deviation = 8.6 
 Number of Observations = 18 
 Blind Sample ID = M224  Mean = 89.17 
 % Relative Standard Deviation = 6.7 
 Number of Observations = 23 
 Blind Sample ID = M222  Mean = 125.97 
 % Relative Standard Deviation = 6.5 
 Number of Observations = 17 
 Blind Sample ID = M220  Mean = 475.27 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 23 
 Blind Sample ID = M218  Mean = 95.10 
 % Relative Standard Deviation = 7.6 
 Number of Observations = 16 
 Blind Sample ID = M216  Mean = 216.19 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 24 
 Blind Sample ID = M214  Mean = 58.18 
 % Relative Standard Deviation = 10.2 
 Number of Observations = 20 
 Blind Sample ID = M212  Mean = 72.38 
 % Relative Standard Deviation = 6.4 
 Number of Observations = 23 
 Blind Sample ID = M210  Mean = 248.16 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 14 
 Blind Sample ID = M208  Mean = 130.39 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 8 
 Blind Sample ID = M206  Mean = 146.80 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 8 
 Blind Sample ID = M204  Mean = 50.06 
 % Relative Standard Deviation = 10.1 
 Number of Observations = 8 
 Blind Sample ID = M202  Mean = 101.96 
 % Relative Standard Deviation = 5.7 
 Number of Observations = 16 
 Blind Sample ID = 75206-25DIW  Mean = 109.70 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 8 
 Blind Sample ID = 75204-25DIW  Mean = 35.59 
 % Relative Standard Deviation = 15.4 
 Number of Observations = 18 
 Blind Sample ID = 75202-25DIW  Mean = 65.56 
 % Relative Standard Deviation = 5.4 
 Number of Observations = 10 
 Blind Sample ID = 75200-25DIW  Mean = 62.88 
 % Relative Standard Deviation = 7.8 
 Number of Observations = 20 
 Blind Sample ID = 75198-25DIW  Mean = 147.48 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 16 
 Blind Sample ID = 75196-25DIW  Mean = 137.94 
 % Relative Standard Deviation = 5.6 
 Number of Observations = 36 
 Blind Sample ID = 75194-25DIW  Mean = 46.42 
 % Relative Standard Deviation = 17.4 
 Number of Observations = 38 
 Blind Sample ID = 75192-25DIW  Mean = 95.11 
 % Relative Standard Deviation = 9.6 
 Number of Observations = 31 
 Blind Sample ID = 75190-25DIW  Mean = 109.34 
 % Relative Standard Deviation = 6.3 
 Number of Observations = 23 
 Blind Sample ID = 75190-25192  Mean = 144.45 
 % Relative Standard Deviation = 7.0 
 Number of Observations = 40 
 Blind Sample ID = 75188-25DIW  Mean = 173.46 
 % Relative Standard Deviation = 5.3 
 Number of Observations = 21 
 Blind Sample ID = 75188-25190  Mean = 99.71 
 % Relative Standard Deviation = 11.3 
 Number of Observations = 24 
 Blind Sample ID = 75186-25DIW  Mean = 79.47 
 % Relative Standard Deviation = 6.5 
 Number of Observations = 45 
 Blind Sample ID = 75184-25DIW  Mean = 125.64 
 % Relative Standard Deviation = 7.0 
 Number of Observations = 21 
 Blind Sample ID = 75184-25188  Mean = 74.54 
 % Relative Standard Deviation = 11.4 
 Number of Observations = 24 
 Blind Sample ID = 75182-25DIW  Mean = 131.61 
 % Relative Standard Deviation = 5.5 
 Number of Observations = 48 
 Blind Sample ID = 75180-25DIW  Mean = 308.39 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 24 
 Blind Sample ID = 75178-25DIW  Mean = 70.89 
 % Relative Standard Deviation = 9.0 
 Number of Observations = 47 
 Blind Sample ID = 75176-25DIW  Mean = 107.81 
 % Relative Standard Deviation = 10.6 
 Number of Observations = 23 
 Blind Sample ID = 75174-25DIW  Mean = 71.50 
 % Relative Standard Deviation = 10.2 
 Number of Observations = 46 
 Blind Sample ID = 75172-25DIW  Mean = 93.25 
 % Relative Standard Deviation = 8.0 
 Number of Observations = 21 
 Blind Sample ID = 75172-25176  Mean = 52.53 
 % Relative Standard Deviation = 8.3 
 Number of Observations = 22 
 Blind Sample ID = 75170-25DIW  Mean = 192.59 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 24 
 Blind Sample ID = 75166-25DIW  Mean = 52.32 
 % Relative Standard Deviation = 8.4 
 Number of Observations = 47 
 Blind Sample ID = 50168-50DIW  Mean = 86.68 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 23 
 Blind Sample ID = 50168-50170  Mean = 146.35 
 % Relative Standard Deviation = 5.6 
 Number of Observations = 24 
 Blind Sample ID = 50168-50164  Mean = 96.24 
 % Relative Standard Deviation = 7.8 
 Number of Observations = 24 
 Blind Sample ID = 50164-50DIW  Mean = 222.65 
 % Relative Standard Deviation = 3.5 
 Number of Observations = 24 
 Blind Sample ID = 50164-50166  Mean = 137.86 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 8 
 Blind Sample ID = 25206-75204  Mean = 75.33 
 % Relative Standard Deviation = 8.3 
 Number of Observations = 8 
 Blind Sample ID = 25204-75202  Mean = 114.20 
 % Relative Standard Deviation = 7.4 
 Number of Observations = 8 
 Blind Sample ID = 25202-75206  Mean = 74.07 
 % Relative Standard Deviation = 5.9 
 Number of Observations = 12 
 Blind Sample ID = 25202-75198  Mean = 59.37 
 % Relative Standard Deviation = 11.1 
 Number of Observations = 12 
 Blind Sample ID = 25200-75202  Mean = 89.04 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 12 
 Blind Sample ID = 25198-75200  Mean = 158.48 
 % Relative Standard Deviation = 5.4 
 Number of Observations = 12 
 Blind Sample ID = 25198-75194  Mean = 111.43 
 % Relative Standard Deviation = 11.0 
 Number of Observations = 12 
 Blind Sample ID = 25196-75198  Mean = 191.57 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 12 
 Blind Sample ID = 25194-75196  Mean = 91.57 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 16 
 Blind Sample ID = 25194-75192  Mean = 110.14 
 % Relative Standard Deviation = 4.9 
 Number of Observations = 16 
 Blind Sample ID = 25192-75190  Mean = 168.72 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 16 
 Blind Sample ID = 25190-75194  Mean = 93.65 
 % Relative Standard Deviation = 6.6 
 Number of Observations = 21 
 Blind Sample ID = 25188-75192  Mean = 177.70 
 % Relative Standard Deviation = 3.9 
 Number of Observations = 23 
 Blind Sample ID = 25186-75188  Mean = 123.15 
 % Relative Standard Deviation = 6.6 
 Number of Observations = 24 
 Blind Sample ID = 25184-75186  Mean = 102.25 
 % Relative Standard Deviation = 7.6 
 Number of Observations = 24 
 Blind Sample ID = 25184-75182  Mean = 154.82 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 24 
 Blind Sample ID = 25182-75180  Mean = 120.77 
 % Relative Standard Deviation = 4.9 
 Number of Observations = 23 
 Blind Sample ID = 25180-75184  Mean = 349.54 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 24 
 Blind Sample ID = 25180-75178  Mean = 111.45 
 % Relative Standard Deviation = 5.3 
 Number of Observations = 23 
 Blind Sample ID = 25180-75176  Mean = 171.12 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 23 
 Blind Sample ID = 25178-75176  Mean = 100.50 
 % Relative Standard Deviation = 8.1 
 Number of Observations = 22 
 Blind Sample ID = 25174-75176  Mean = 131.30 
 % Relative Standard Deviation = 9.0 
 Number of Observations = 22 
 Blind Sample ID = 25172-75174  Mean = 74.22 
 % Relative Standard Deviation = 6.9 
 Number of Observations = 22 
 Blind Sample ID = 25172-75170  Mean = 99.69 
 % Relative Standard Deviation = 5.1 
 Number of Observations = 24 
 Blind Sample ID = 25172-75168  Mean = 218.94 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 25 
 Blind Sample ID = 25168-75166
The SGPlot Procedure



- Specific Cond, LAB, UNF -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 90095, MCode: WHT03
Dates: 10/12/04 through 07/14/22
Open Data Set

 Mean = 21.17 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 6 
 Blind Sample ID = P73  Mean = 34.60 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 6 
 Blind Sample ID = P72  Mean = 22.39 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 15 
 Blind Sample ID = P71  Mean = 49.87 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 8 
 Blind Sample ID = P70  Mean = 48.72 
 % Relative Standard Deviation = 6.8 
 Number of Observations = 15 
 Blind Sample ID = P69  Mean = 27.01 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 8 
 Blind Sample ID = P68  Mean = 24.53 
 % Relative Standard Deviation = 5.5 
 Number of Observations = 16 
 Blind Sample ID = P67  Mean = 47.72 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 7 
 Blind Sample ID = P66  Mean = 18.03 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 14 
 Blind Sample ID = P65  Mean = 50.41 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 8 
 Blind Sample ID = P64  Mean = 46.00 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 16 
 Blind Sample ID = P63  Mean = 27.80 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 8 
 Blind Sample ID = P62  Mean = 71.81 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 16 
 Blind Sample ID = P61  Mean = 29.10 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 8 
 Blind Sample ID = P60  Mean = 39.96 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 16 
 Blind Sample ID = P59  Mean = 28.66 
 % Relative Standard Deviation = 4.7 
 Number of Observations = 8 
 Blind Sample ID = P58  Mean = 13.64 
 % Relative Standard Deviation = 12.7 
 Number of Observations = 14 
 Blind Sample ID = P57  Mean = 36.52 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 5 
 Blind Sample ID = P56  Mean = 16.11 
 % Relative Standard Deviation = 3.1 
 Number of Observations = 3 
 Blind Sample ID = P55  Mean = 217.91 
 % Relative Standard Deviation = 0.3 
 Number of Observations = 3 
 Blind Sample ID = M234  Mean = 430.80 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 8 
 Blind Sample ID = M232  Mean = 261.25 
 % Relative Standard Deviation = 3.3 
 Number of Observations = 12 
 Blind Sample ID = M230  Mean = 170.84 
 % Relative Standard Deviation = 0.4 
 Number of Observations = 14 
 Blind Sample ID = M228  Mean = 220.78 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 20 
 Blind Sample ID = M226  Mean = 99.80 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 18 
 Blind Sample ID = M224  Mean = 160.76 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 23 
 Blind Sample ID = M222  Mean = 213.56 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 17 
 Blind Sample ID = M220  Mean = 715.55 
 % Relative Standard Deviation = 0.5 
 Number of Observations = 24 
 Blind Sample ID = M218  Mean = 152.47 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 16 
 Blind Sample ID = M216  Mean = 361.25 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 24 
 Blind Sample ID = M214  Mean = 92.10 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 20 
 Blind Sample ID = M212  Mean = 119.91 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 24 
 Blind Sample ID = M210  Mean = 428.87 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 14 
 Blind Sample ID = M208  Mean = 226.77 
 % Relative Standard Deviation = 0.3 
 Number of Observations = 8 
 Blind Sample ID = M206  Mean = 251.80 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 8 
 Blind Sample ID = M204  Mean = 85.88 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 8 
 Blind Sample ID = M202  Mean = 172.53 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 16 
 Blind Sample ID = 75206-25DIW  Mean = 190.01 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 7 
 Blind Sample ID = 75204-25DIW  Mean = 65.79 
 % Relative Standard Deviation = 4.6 
 Number of Observations = 18 
 Blind Sample ID = 75202-25DIW  Mean = 114.44 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 13 
 Blind Sample ID = 75200-25DIW  Mean = 110.40 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 29 
 Blind Sample ID = 75198-25DIW  Mean = 258.50 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 24 
 Blind Sample ID = 75196-25DIW  Mean = 236.96 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 48 
 Blind Sample ID = 75194-25DIW  Mean = 77.11 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 48 
 Blind Sample ID = 75192-25DIW  Mean = 160.53 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 40 
 Blind Sample ID = 75190-25DIW  Mean = 184.70 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 24 
 Blind Sample ID = 75190-25192  Mean = 254.06 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 44 
 Blind Sample ID = 75188-25DIW  Mean = 302.41 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 22 
 Blind Sample ID = 75188-25190  Mean = 166.96 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 24 
 Blind Sample ID = 75186-25DIW  Mean = 131.48 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 47 
 Blind Sample ID = 75184-25DIW  Mean = 212.55 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 24 
 Blind Sample ID = 75184-25188  Mean = 130.66 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 24 
 Blind Sample ID = 75182-25DIW  Mean = 235.25 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 48 
 Blind Sample ID = 75180-25DIW  Mean = 490.30 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 24 
 Blind Sample ID = 75178-25DIW  Mean = 121.22 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 46 
 Blind Sample ID = 75176-25DIW  Mean = 192.16 
 % Relative Standard Deviation = 3.6 
 Number of Observations = 24 
 Blind Sample ID = 75174-25DIW  Mean = 119.96 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 46 
 Blind Sample ID = 75172-25DIW  Mean = 159.95 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 21 
 Blind Sample ID = 75172-25176  Mean = 85.19 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 21 
 Blind Sample ID = 75170-25DIW  Mean = 320.82 
 % Relative Standard Deviation = 4.8 
 Number of Observations = 24 
 Blind Sample ID = 75166-25DIW  Mean = 92.59 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 46 
 Blind Sample ID = 50168-50DIW  Mean = 147.54 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 23 
 Blind Sample ID = 50168-50170  Mean = 232.57 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 24 
 Blind Sample ID = 50168-50164  Mean = 144.20 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 21 
 Blind Sample ID = 50164-50DIW  Mean = 353.38 
 % Relative Standard Deviation = 4.4 
 Number of Observations = 24 
 Blind Sample ID = 50164-50166  Mean = 247.60 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 8 
 Blind Sample ID = 25206-75204  Mean = 129.85 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 8 
 Blind Sample ID = 25204-75202  Mean = 194.03 
 % Relative Standard Deviation = 1.8 
 Number of Observations = 8 
 Blind Sample ID = 25202-75206  Mean = 128.28 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 12 
 Blind Sample ID = 25202-75198  Mean = 100.19 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 12 
 Blind Sample ID = 25200-75202  Mean = 148.94 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 12 
 Blind Sample ID = 25198-75200  Mean = 272.47 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 20 
 Blind Sample ID = 25198-75194  Mean = 195.64 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 20 
 Blind Sample ID = 25196-75198  Mean = 330.65 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 20 
 Blind Sample ID = 25194-75196  Mean = 155.49 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 24 
 Blind Sample ID = 25194-75192  Mean = 184.13 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 24 
 Blind Sample ID = 25192-75190  Mean = 288.03 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 24 
 Blind Sample ID = 25190-75194  Mean = 162.71 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 24 
 Blind Sample ID = 25188-75192  Mean = 306.98 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 24 
 Blind Sample ID = 25186-75188  Mean = 209.82 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 24 
 Blind Sample ID = 25184-75186  Mean = 172.30 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 24 
 Blind Sample ID = 25184-75182  Mean = 278.42 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 24 
 Blind Sample ID = 25182-75180  Mean = 209.67 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 24 
 Blind Sample ID = 25180-75184  Mean = 560.58 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 24 
 Blind Sample ID = 25180-75178  Mean = 197.61 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 23 
 Blind Sample ID = 25180-75176  Mean = 287.37 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 23 
 Blind Sample ID = 25178-75176  Mean = 183.44 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 21 
 Blind Sample ID = 25174-75176  Mean = 231.30 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 22 
 Blind Sample ID = 25172-75174  Mean = 124.72 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 22 
 Blind Sample ID = 25172-75170  Mean = 174.92 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 24 
 Blind Sample ID = 25172-75168  Mean = 350.08 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 25 
 Blind Sample ID = 25168-75166
The SGPlot Procedure



- Sulfate, FIL, IC -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00945, MCode: IC022
Dates: 12/29/04 through 09/27/22
Open Data Set

 Mean = 0.23 
 % Relative Standard Deviation = 4.1 
 Number of Observations = 6 
 Blind Sample ID = P73  Mean = 0.45 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 6 
 Blind Sample ID = P72  Mean = 0.17 
 % Relative Standard Deviation = 5.6 
 Number of Observations = 15 
 Blind Sample ID = P71  Mean = 0.59 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 8 
 Blind Sample ID = P70  Mean = 0.24 
 % Relative Standard Deviation = 5.3 
 Number of Observations = 16 
 Blind Sample ID = P69  Mean = 0.44 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 8 
 Blind Sample ID = P68  Mean = 0.20 
 % Relative Standard Deviation = 8.4 
 Number of Observations = 16 
 Blind Sample ID = P67  Mean = 0.87 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 7 
 Blind Sample ID = P66  Mean = 0.23 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 14 
 Blind Sample ID = P65  Mean = 0.55 
 % Relative Standard Deviation = 2.8 
 Number of Observations = 8 
 Blind Sample ID = P64  Mean = 0.36 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 16 
 Blind Sample ID = P63  Mean = 1.75 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 8 
 Blind Sample ID = P62  Mean = 0.50 
 % Relative Standard Deviation = 3.7 
 Number of Observations = 16 
 Blind Sample ID = P61  Mean = 0.51 
 % Relative Standard Deviation = 3.8 
 Number of Observations = 8 
 Blind Sample ID = P60  Mean = 0.52 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 16 
 Blind Sample ID = P59  Mean = 1.67 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 8 
 Blind Sample ID = P58  Mean = 0.21 
 % Relative Standard Deviation = 5.6 
 Number of Observations = 16 
 Blind Sample ID = P57  Mean = 0.92 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = P56  Mean = 0.67 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 6 
 Blind Sample ID = P55  Mean = 8.40 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 3 
 Blind Sample ID = M234  Mean = 73.60 
 % Relative Standard Deviation = 2.0 
 Number of Observations = 8 
 Blind Sample ID = M232  Mean = 11.03 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 12 
 Blind Sample ID = M230  Mean = 26.55 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 14 
 Blind Sample ID = M228  Mean = 13.95 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 20 
 Blind Sample ID = M226  Mean = 5.42 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 18 
 Blind Sample ID = M224  Mean = 9.56 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 23 
 Blind Sample ID = M222  Mean = 21.56 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 17 
 Blind Sample ID = M220  Mean = 211.69 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 23 
 Blind Sample ID = M218  Mean = 8.25 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 16 
 Blind Sample ID = M216  Mean = 78.71 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 24 
 Blind Sample ID = M214  Mean = 5.46 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 19 
 Blind Sample ID = M212  Mean = 8.35 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 24 
 Blind Sample ID = M210  Mean = 33.50 
 % Relative Standard Deviation = 0.6 
 Number of Observations = 14 
 Blind Sample ID = M208  Mean = 32.30 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 8 
 Blind Sample ID = M206  Mean = 7.65 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 8 
 Blind Sample ID = M204  Mean = 4.15 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 8 
 Blind Sample ID = M202  Mean = 24.40 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 16 
 Blind Sample ID = 75206-25DIW  Mean = 5.68 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 8 
 Blind Sample ID = 75204-25DIW  Mean = 3.08 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 18 
 Blind Sample ID = 75202-25DIW  Mean = 8.48 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 13 
 Blind Sample ID = 75200-25DIW  Mean = 7.39 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 29 
 Blind Sample ID = 75198-25DIW  Mean = 24.91 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 24 
 Blind Sample ID = 75196-25DIW  Mean = 11.72 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 52 
 Blind Sample ID = 75194-25DIW  Mean = 3.46 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 48 
 Blind Sample ID = 75192-25DIW  Mean = 5.64 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 40 
 Blind Sample ID = 75190-25DIW  Mean = 6.63 
 % Relative Standard Deviation = 5.0 
 Number of Observations = 24 
 Blind Sample ID = 75190-25192  Mean = 24.02 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 43 
 Blind Sample ID = 75188-25DIW  Mean = 25.44 
 % Relative Standard Deviation = 2.6 
 Number of Observations = 22 
 Blind Sample ID = 75188-25190  Mean = 11.07 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 22 
 Blind Sample ID = 75186-25DIW  Mean = 15.57 
 % Relative Standard Deviation = 6.0 
 Number of Observations = 43 
 Blind Sample ID = 75184-25DIW  Mean = 22.84 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 24 
 Blind Sample ID = 75184-25188  Mean = 7.74 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 24 
 Blind Sample ID = 75182-25DIW  Mean = 28.25 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 48 
 Blind Sample ID = 75180-25DIW  Mean = 132.71 
 % Relative Standard Deviation = 0.8 
 Number of Observations = 24 
 Blind Sample ID = 75178-25DIW  Mean = 13.55 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 47 
 Blind Sample ID = 75176-25DIW  Mean = 5.78 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 23 
 Blind Sample ID = 75174-25DIW  Mean = 8.92 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 46 
 Blind Sample ID = 75172-25DIW  Mean = 13.84 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 21 
 Blind Sample ID = 75172-25176  Mean = 6.17 
 % Relative Standard Deviation = 4.5 
 Number of Observations = 22 
 Blind Sample ID = 75170-25DIW  Mean = 42.00 
 % Relative Standard Deviation = 1.4 
 Number of Observations = 24 
 Blind Sample ID = 75166-25DIW  Mean = 12.15 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 47 
 Blind Sample ID = 50168-50DIW  Mean = 16.23 
 % Relative Standard Deviation = 1.2 
 Number of Observations = 23 
 Blind Sample ID = 50168-50170  Mean = 17.80 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 24 
 Blind Sample ID = 50168-50164  Mean = 5.21 
 % Relative Standard Deviation = 7.1 
 Number of Observations = 24 
 Blind Sample ID = 50164-50DIW  Mean = 33.68 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 24 
 Blind Sample ID = 50164-50166  Mean = 13.83 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 8 
 Blind Sample ID = 25206-75204  Mean = 4.97 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 8 
 Blind Sample ID = 25204-75202  Mean = 25.71 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 8 
 Blind Sample ID = 25202-75206  Mean = 8.44 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 12 
 Blind Sample ID = 25202-75198  Mean = 5.97 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 12 
 Blind Sample ID = 25200-75202  Mean = 11.14 
 % Relative Standard Deviation = 1.9 
 Number of Observations = 12 
 Blind Sample ID = 25198-75200  Mean = 14.26 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 20 
 Blind Sample ID = 25198-75194  Mean = 15.92 
 % Relative Standard Deviation = 2.2 
 Number of Observations = 19 
 Blind Sample ID = 25196-75198  Mean = 28.79 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 20 
 Blind Sample ID = 25194-75196  Mean = 7.31 
 % Relative Standard Deviation = 4.2 
 Number of Observations = 24 
 Blind Sample ID = 25194-75192  Mean = 6.73 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 24 
 Blind Sample ID = 25192-75190  Mean = 13.67 
 % Relative Standard Deviation = 2.1 
 Number of Observations = 24 
 Blind Sample ID = 25190-75194  Mean = 11.58 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 24 
 Blind Sample ID = 25188-75192  Mean = 27.19 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 24 
 Blind Sample ID = 25186-75188  Mean = 16.91 
 % Relative Standard Deviation = 5.2 
 Number of Observations = 23 
 Blind Sample ID = 25184-75186  Mean = 12.80 
 % Relative Standard Deviation = 1.6 
 Number of Observations = 24 
 Blind Sample ID = 25184-75182  Mean = 31.07 
 % Relative Standard Deviation = 1.1 
 Number of Observations = 24 
 Blind Sample ID = 25182-75180  Mean = 24.87 
 % Relative Standard Deviation = 1.7 
 Number of Observations = 22 
 Blind Sample ID = 25180-75184  Mean = 142.63 
 % Relative Standard Deviation = 0.7 
 Number of Observations = 24 
 Blind Sample ID = 25180-75178  Mean = 23.66 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 23 
 Blind Sample ID = 25180-75176  Mean = 56.08 
 % Relative Standard Deviation = 0.9 
 Number of Observations = 23 
 Blind Sample ID = 25178-75176  Mean = 15.32 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 22 
 Blind Sample ID = 25174-75176  Mean = 8.71 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 22 
 Blind Sample ID = 25172-75174  Mean = 8.93 
 % Relative Standard Deviation = 3.0 
 Number of Observations = 22 
 Blind Sample ID = 25172-75170  Mean = 21.57 
 % Relative Standard Deviation = 1.3 
 Number of Observations = 24 
 Blind Sample ID = 25172-75168  Mean = 48.43 
 % Relative Standard Deviation = 1.5 
 Number of Observations = 25 
 Blind Sample ID = 25168-75166
The SGPlot Procedure



- Sulfate, FIL, IC, LL -
Percent Relative Standard Deviation
Lab: NWQL, PCode: 00945, MCode: IC024
Dates: 03/02/05 through 11/01/13
Open Data Set

 Mean = 0.66 
 % Relative Standard Deviation = 2.5 
 Number of Observations = 8 
 Blind Sample ID = P55  Mean = 0.26 
 % Relative Standard Deviation = 4.8 
 Number of Observations = 8 
 Blind Sample ID = P54  Mean = 0.42 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 16 
 Blind Sample ID = P53  Mean = 0.19 
 % Relative Standard Deviation = 3.2 
 Number of Observations = 8 
 Blind Sample ID = P52  Mean = 1.99 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 24 
 Blind Sample ID = P51  Mean = 0.83 
 % Relative Standard Deviation = 5.8 
 Number of Observations = 32 
 Blind Sample ID = P50  Mean = 0.60 
 % Relative Standard Deviation = 8.1 
 Number of Observations = 31 
 Blind Sample ID = P49  Mean = 0.26 
 % Relative Standard Deviation = 6.1 
 Number of Observations = 30 
 Blind Sample ID = P48  Mean = 0.18 
 % Relative Standard Deviation = 6.7 
 Number of Observations = 14 
 Blind Sample ID = P47  Mean = 0.49 
 % Relative Standard Deviation = 3.4 
 Number of Observations = 26 
 Blind Sample ID = P46  Mean = 0.24 
 % Relative Standard Deviation = 5.6 
 Number of Observations = 31 
 Blind Sample ID = P45  Mean = 1.17 
 % Relative Standard Deviation = 2.7 
 Number of Observations = 28 
 Blind Sample ID = P44  Mean = 0.43 
 % Relative Standard Deviation = 2.3 
 Number of Observations = 30 
 Blind Sample ID = P43  Mean = 0.25 
 % Relative Standard Deviation = 2.4 
 Number of Observations = 32 
 Blind Sample ID = P42  Mean = 0.26 
 % Relative Standard Deviation = 2.9 
 Number of Observations = 24 
 Blind Sample ID = P41  Mean = 0.61 
 % Relative Standard Deviation = 1.0 
 Number of Observations = 24 
 Blind Sample ID = P36
The SGPlot Procedure