FREQUENCY HISTOGRAM: PERCENT TIME SUBMERGED PER 

 FOUR HOUR SUMMARY PERIOD 

 ^ PTT 839 



-30 r/ Z' I I I I 1 i 1 r 



o 



z 



M 



o- 



7 



4 

 3 

 2 

 1 

 



23:16-05:15 GMT (1) X=82 SD=12 N = 29 

 F^ 05:16-11:15 GMT (2) X=85 SD=11 N = 33 

 W^ 11:16-17:15 GMT (3) X=84 SD = 9 N = 28 

 i I 17:16-23:15 GMT (4) X=81 SD=11 N=23 



/L 



/ — r 



o 



I 



CD 



in 



I 



PERCENT TIME SUBMERGED 



Figure 74. Frequency histogram of mean percent time submerged for all 6-hour summary 

 periods for PTT #839. See note in Figure 68. 



112 



