15 



10 



5 







AVERAGE DIVE DURATION HISTOGRAMS 

 PTT 831 



PERIODS 1-4 COMBINED 

 # PERIODS = 7 

 X=83 SD = 20 



0-60 



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



323:16-05:15 GMT (1) X=75 SD = 24 N = 3 

 ]05:16-11:15 GMT (2) X=102 SD=0 N=l 

 jll:16-I7:15 GMT (3) X=100 SD=0 N=l 

 ] 17:16-23:15 GMT (4) X=77 SD = 9 N = 2 



^or^n 



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

 AVERAGE DIVE DURATION (SEC) 



■360 



Figure 59. Frequency histogram of average dive duration (seconds) during all 6-hour 

 summary periods for PTT #831. See note in Figure 55. 



94 



