BQS OBSP Determination:
ATRAZINE
METHOD: 2001 , TESTIDCODE: 39632GCM35
Open Data Set

The SGPlot Procedure

Plotted Points Statistics
ATRAZINE

Spike Level N Mean Std-Dev. Median F_Pseudo
>= Reporting Level 70 110% 22% 113% 22%
Total 70 110% 22% 113% 22%

Sample Statistics
ATRAZINE

Characteristic N % % Basis
Plotted 70 100% Spiked
Estimated Values 6 9% Spiked
Deleted Values 0 0% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 70 .  
False Negatives 0 0% 0 out of 70
Not Spiked 60 .  
False Positives 1 2% 1 out of 60