BQS OBSP Determination:
TETRACHLOROETHYLENE
METHOD: 2021 , TESTIDCODE: 34475GCM66
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
TETRACHLOROETHYLENE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 35 96% 15% 99% 11%
>= Reporting Level 208 99% 15% 99% 13%
Total 243 99% 15% 99% 13%

Sample Statistics
TETRACHLOROETHYLENE

Characteristic N % % Basis
Plotted 243 100% Spiked
Estimated Values 76 31% Spiked
Deleted Values 32 6% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 275 .  
False Negatives 0 0% 0 out of 243
Not Spiked 232 .  
False Positives 33 14% 33 out of 232