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FREQUENCY HISTOGRAM: NUMBER OF DIVES PER SIX HOUR 



SUMMARY PERIOD 

 PTT 827 







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PERIODS 1-4 COMBINED 

 # PERIODS = 5 

 total # dives = 630 

 X = 126 sd = 7 



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 9 







23:16-05:15 GMT (1) X=130 SD = N=l 

 05:16-11:15 GMT (2) X=138 SD = N=l 

 11:16-17:15 GMT (3) X=121 SD = 2 N = 2 

 17:16-23:15 GMT (4) X=120 SD = N=l 



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NUMBER OF DIVES 



Figure 45. Frequency histogram of the number of dives during all 6-hour summary periods 

 for PTT #827. See note in Figure 42. 



76 



