BQS OBSP Determination:
DI-N-BUTYL PHTHALATE
SCHEDULE: 1383 , TESTIDCODE: 39110GCM57
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
DI-N-BUTYL PHTHALATE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 18 85% 17% 85% 12%
>= Reporting Level 37 83% 13% 86% 10%
Total 55 84% 14% 86% 12%

Sample Statistics
DI-N-BUTYL PHTHALATE

Characteristic N % % Basis
Plotted 55 93% Spiked
Estimated Values 19 32% Spiked
Deleted Values 2 1% Spiked + Not Spiked
Spiked, Censored 2 3% Spiked
Spiked 60 .  
False Negatives 2 3% 2 out of 59
Not Spiked 77 .  
False Positives 1 1% 1 out of 76