BQS OBSP Determination:
TETRACHLOROETHYLENE
SCHEDULE: 1433 , TESTIDCODE: 34476GCM37
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
TETRACHLOROETHYLENE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 4 21% 8% 18% 7%
>= Reporting Level 78 25% 11% 25% 11%
Total 82 25% 11% 25% 11%

Sample Statistics
TETRACHLOROETHYLENE

Characteristic N % % Basis
Plotted 82 95% Spiked
Estimated Values 82 95% Spiked
Deleted Values 0 0% Spiked + Not Spiked
Spiked, Censored 2 2% Spiked
Spiked 86 .  
False Negatives 2 2% 2 out of 86
Not Spiked 85 .  
False Positives 0 0% 0 out of 85