BQS OBSP Determination:
BUTYLBENZENE
METHOD: 2021 , TESTIDCODE: 77342GCM66
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
BUTYLBENZENE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 17 88% 25% 87% 25%
>= Reporting Level 129 81% 15% 79% 14%
Total 146 82% 17% 79% 15%

Sample Statistics
BUTYLBENZENE

Characteristic N % % Basis
Plotted 146 100% Spiked
Estimated Values 21 14% Spiked
Deleted Values 33 6% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 174 .  
False Negatives 0 0% 0 out of 146
Not Spiked 334 .  
False Positives 1 0% 1 out of 329