RATIOS IN TRANSURANIC ELEMENT STUDIES 195 



3000 



20 30 40 



NUMBER OF SAMPLES 



50 



60 



Fig. 5 Variance of '^""'^''Cs concentrations in Hypericum walteri as a function of 

 number of samples randomly ordered by weight. 



2500 



0.4 0,3 



SAMPLE WEIGHT, g 

 0.2 0.1 



0.05 



20 30 40 



NUMBER OF SAMPLES 



50 



60 



Fig, 6 Variance of ' ^'* ' ^''Cs concentrations in Hypericum walteri as a function of the 

 number of samples ordered by decreasing weight. 



