BQS OBSP Determination:
1,2,3,4-TETRAMETHYLBENZENE
METHOD: 2021 , TESTIDCODE: 49999GCM66
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
1,2,3,4-TETRAMETHYLBENZENE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 5 105% 47% 108% 33%
>= Reporting Level 109 86% 13% 84% 12%
Total 114 87% 16% 84% 12%

Sample Statistics
1,2,3,4-TETRAMETHYLBENZENE

Characteristic N % % Basis
Plotted 114 100% Spiked
Estimated Values 5 4% Spiked
Deleted Values 33 7% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 119 .  
False Negatives 0 0% 0 out of 114
Not Spiked 383 .  
False Positives 0 0% 0 out of 355