BQS OBSP Determination:
DICHLOROMETHANE
METHOD: 2021 , TESTIDCODE: 34423GCM66
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
DICHLOROMETHANE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 27 138% 60% 119% 40%
>= Reporting Level 168 148% 113% 115% 24%
Total 195 146% 107% 116% 25%

Sample Statistics
DICHLOROMETHANE

Characteristic N % % Basis
Plotted 195 100% Spiked
Estimated Values 30 15% Spiked
Deleted Values 33 6% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 218 .  
False Negatives 0 0% 0 out of 195
Not Spiked 290 .  
False Positives 42 15% 42 out of 280