15 



10 



5 







AVERAGE DIVE DURATION HISTOGRAMS 

 PTT 840 



PERIODS 1-4 COMBINED 

 # PERIODS = 15 

 X= 162 SD= 69 



0-60 



61-120 121-180 181-240 241-300 301-360 



]23:16-05:15 GMT (1) X=113 SD=35 N=4 

 305;16-11:15 GMT (2) X = 212 SD=45 N=4 

 jll:16-17:15 GMT (3) X=162 SD=58 N=4 

 ] 17:16-23:15 GMT (4) X=134 SD=84 N = 3 



^ 



n n 



In f^ 



^ 



a_ 



0-60 61-120 121-180 181-240 241-300 301-360 

 AVERAGE DIVE DURATION (SEC) 



Figure 62. Frequency histogram of average dive duration (seconds) during all 6-hour 

 summary periods for PTT #840. See note in Figure 55. 



97 



