BQS OBSP Determination:
TERT-BUTYLBENZENE
METHOD: 2021 , TESTIDCODE: 77353GCM66
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
TERT-BUTYLBENZENE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 5 81% 28% 80% 9%
>= Reporting Level 126 87% 17% 85% 19%
Total 131 87% 17% 83% 19%

Sample Statistics
TERT-BUTYLBENZENE

Characteristic N % % Basis
Plotted 131 98% Spiked
Estimated Values 32 24% Spiked
Deleted Values 33 6% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 155 .  
False Negatives 2 2% 2 out of 133
Not Spiked 353 .  
False Positives 1 0% 1 out of 342