10,000-1 



«cr 1,000- 



E 



\ 

 l. 



o> 

 Ji 

 E 



Z 



100- 



10- 



Range 

 # Mean 



— I 1 1 - 



II 15 17 



Sampling Station 



18 



19 



Figure 34. Population estimates for September 1975, mean and range of 

 six Water's samples at each station. 



54 



