BQS OBSP Determination:
1,4-DICHLOROBENZENE
METHOD: 2021 , TESTIDCODE: 34571GCM66
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
1,4-DICHLOROBENZENE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 5 83% 20% 91% 2%
>= Reporting Level 216 89% 14% 90% 12%
Total 221 89% 14% 90% 12%

Sample Statistics
1,4-DICHLOROBENZENE

Characteristic N % % Basis
Plotted 221 100% Spiked
Estimated Values 56 25% Spiked
Deleted Values 33 6% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 248 .  
False Negatives 0 0% 0 out of 221
Not Spiked 260 .  
False Positives 2 1% 2 out of 254