Plot of pctrecov by newdate

Statistics for the Plotted Points
COTININE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 6 68% 11% 72% 10%
>= Reporting Level 44 81% 15% 79% 14%
Total 50 80% 15% 76% 13%

Miscellaneous Statistics for the Samples
COTININE

Characteristic N % % Basis
Plotted 50 91% Spiked
Estimated Values 6 11% Spiked
Deleted Values 1 1% Spiked + Not Spiked
Spiked, Censored 1 2% Spiked
Spiked 55 .  
False Negatives 4 7% 4 out of 55
Not Spiked 46 .  
False Positives 0 0% 0 out of 45