BQS OBSP Determination:
TERT-BUTYL METHYL ETHER (MTBE)
METHOD: 2021 , TESTIDCODE: 78032GCM66
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
TERT-BUTYL METHYL ETHER (MTBE)

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 14 112% 29% 108% 21%
>= Reporting Level 134 102% 12% 100% 10%
Total 148 103% 15% 100% 11%

Sample Statistics
TERT-BUTYL METHYL ETHER (MTBE)

Characteristic N % % Basis
Plotted 148 97% Spiked
Estimated Values 13 9% Spiked
Deleted Values 33 6% Spiked + Not Spiked
Spiked, Censored 4 3% Spiked
Spiked 174 .  
False Negatives 0 0% 0 out of 152
Not Spiked 334 .  
False Positives 0 0% 0 out of 323