AVERAGE DIVE DURATION VS DATE 



> 



o 



< 



> 



< 



360 



300 - 

 240 - 

 180 - 



120 - 



60 - 



PTT 839 _ 



CO 



E- 

 U 



o 



I I I I I I I t I I I I I I 1 



00 CO 



O 



o 



o 



DATE (1990) 



Figure 64. Chronological comparison of the average dive durations for PTTs #823 and 

 #839 tagged in 1990. Bars represent average dive durations during 6-hour summary periods. 



99 



