COMPARISON OF AVERAGE NUMBER OF DIVES 

 PER SIX HOUR SUMMARY PERIOD 



ALL ANIMALS 



> 



o 

 S 



O 



<: 



> 



< 



550 

 600 



550 

 500 

 450 

 400 

 350 

 500 

 250 

 200 

 150 

 100 

 50 

 



ALL 823 825 827 831 833 839 840 



PTT NUMBER 



Figure 41. Comparison of average number of dives during a 6-hour summary period for all 

 1990 animals. A dive is defined as a submergence greater than 6 seconds. N = number of 

 summary periods for which error-free data were collected. 



72 



