BQS OBSP Determination:
1,1,2,2-TETRACHLOROETHANE
METHOD: 2021 , TESTIDCODE: 34516GCM66
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
1,1,2,2-TETRACHLOROETHANE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 18 106% 19% 103% 21%
>= Reporting Level 153 102% 15% 101% 13%
Total 171 102% 15% 101% 13%

Sample Statistics
1,1,2,2-TETRACHLOROETHANE

Characteristic N % % Basis
Plotted 171 98% Spiked
Estimated Values 16 9% Spiked
Deleted Values 33 6% Spiked + Not Spiked
Spiked, Censored 2 1% Spiked
Spiked 197 .  
False Negatives 2 1% 2 out of 175
Not Spiked 311 .  
False Positives 0 0% 0 out of 300