TOO 



g SO 

 o 



w 



60 



CO 



^ 40 

 E- 



z 



o 

 g 20 





 100 



Q 



o 80 



M 



w 60 

 w 



"^ 





40 



20 



O 



o 



o 



o 



o 

 o 



o 



PTT 839 



y = 87.32-3.67x 



-2 2 4 6 8 10 

 NUMBER OF ZERO DURATION DIVES 



Figure 78. Number of zero-duration dives per 6-hour period versus percent time submerged 

 (PTTs 823 and 839). 



119 



