PTT 840 



20 



K 

 K 



3 10 



Q 



a. 



C/2 







1000 







X 

 C/1 



15 - 







-1 ' \ ' \ ' 1 ' 1 — 



50 100 150 200 250 



AVERAGE DIVE DURATION (SECONDS) 



300 



1 ' \ ' r 



50 100 150 200 250 



AVERAGE DIVE DURATION (SECONDS) 



300 



200 



400 600 



NUMBER OF DIVES 



800 



000 



Figure 87. A) The relationship of speed to average dive duration; B) number of dives versus 

 average dive duration; and C) speed versus number of dives for PTT #840. 



129 



