FREQUENCY HISTOGRAM; PERCENT TIME SUBMERGED PER 

 FOUR HOUR SUMMARY PERIOD 

 PTT 823 



o 



2 



10 

 9 



8 

 7 

 6 

 5 

 4 

 3 

 2 

 1 

 



I \ I 1 \ 1 \ \ \ — 



^^ 23:16-05 15 GMT (1) X=70 SD=13 N=39 

 ^3 05:16-11 15 GMT (2) X=72 SD=13 N=38 

 ^^ 11:16-17 15 GMT (3) X=72 SD=14 N = 30 

 I I 17:16-23 15 GMT (4) X=79 SD=10 N=15 



PERCENT TIME SUBMERGED 



Figure 69. Frequency histogram of mean percent time submerged for all 6-hour summary 

 periods for PTT #823. See note in Figure 68. 



107 



