Plot of pctrecov by newdate

Statistics for the Plotted Points
1,7-DIMETHYLXANTHINE

Spike Level N Mean Std-Dev. Median F_Pseudo
>= Reporting Level 50 109% 30% 106% 27%
Total 50 109% 30% 106% 27%

Miscellaneous Statistics for the Samples
1,7-DIMETHYLXANTHINE

Characteristic N % % Basis
Plotted 50 96% Spiked
Estimated Values 30 58% Spiked
Deleted Values 1 1% Spiked + Not Spiked
Spiked, Censored 0 0% Spiked
Spiked 53 .  
False Negatives 2 4% 2 out of 52
Not Spiked 48 .  
False Positives 1 2% 1 out of 48