BQS OBSP Determination:
1,2,4-TRIMETHYLBENZENE
METHOD: 2021 , TESTIDCODE: 77222GCM66
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
1,2,4-TRIMETHYLBENZENE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 9 102% 42% 85% 39%
>= Reporting Level 135 87% 14% 85% 14%
Total 144 88% 17% 85% 14%

Sample Statistics
1,2,4-TRIMETHYLBENZENE

Characteristic N % % Basis
Plotted 144 99% Spiked
Estimated Values 33 23% Spiked
Deleted Values 33 6% Spiked + Not Spiked
Spiked, Censored 1 1% Spiked
Spiked 167 .  
False Negatives 0 0% 0 out of 145
Not Spiked 341 .  
False Positives 1 0% 1 out of 330