PTT 839 



< 



> 

 < 



I I 1 I I I i 



20 



Q 



a 



-1 



5 - 



> 



o 



a; 



03 



z 



1000 



800 

 600 

 400 

 200 



29 AUG 08 SEP 



18 SEP 28 SEP 08 OCT 18 OCT 28 OCT 



DATE 1990 



Figure 81. The chronological relationship of average dive duration, speed and number of 

 dives for PTT #839. 



122 



