30 



25 





O 



z 



FREQUENCY HISTOGRAM: PERCENT TIME SUBMERGED PER 

 FOUR HOUR SUMMARY PERIOD 

 PTT 840 



20 



15 



- 







10 

 9 

 8 

 7 



6 \- 



4 

 3 

 2 - 



1 - 

 



o uo 



I I 



CD — , 



CO ^ 



O 



in 



CO 



lO 



O 

 CD 

 I 

 CD 

 lO 



CD 



I 



CD 



O 



CD 

 CO 



LTD 



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CD 



I 



CD 



CO 



CO 



O 

 CJ5 



I 



CO 

 CO 



in 



CJl 



I 



o 

 o 



CD 

 CT> 



T" 



\ \ \ 1 \ \ 1 \ r 



^^ 23:16-05 15 GMT (I) X=63 SD = 7 N=4 

 ^3 05:16-11 15 GMT (2) X=62 SD = 6 N = 4 

 11:16-17 15 GMT (3) X = 74 SD= 1 N = 4 

 17 16-23 15 GMT (4) X = 70 SD = 7 N = 3 





o 



CD 



CD 



in 

 I 



o 



iD 



CD 



in 

 in 



I 



m 



o 



CD 



I 



CD 



in 



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o 

 I 



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 CD 



in 



r- 



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CO 



I 



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I 



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o 

 in o 



I I 



CD 



d 



PERCENT TIME SUBMERGED 



Figure 75. Frequency histogram of mean percent time submerged for all 6-hour summary 

 periods for PTT #840. See note in Figure 68. 



113 



