30 

 25 



20 h 



o 



z 



D 1 5 - 



w 



10 h 



o 



z 



FREQUENCY HISTOGRAM: PERCENT TIME SUBMERGED PER 

 FOUR HOUR SUMMARY PERIOD 

 PTT 831 



1 \ ] \ \ r 



5 h 









 9 

 8 

 7 \- 



3 \- 



2 

 1 







z_ 



/ r 



T 



PERIODS 1-4 COMBINED 

 # PERIODS = 6 

 X=86 SD=18 



/L. 



o 



'J- 

 I 



CD 

 CO 



in 



o 

 I 



CD 



in 



in 



I 



o 



CD 



in 



CO 



CO — . 



in CD 



o 



CD 

 CD 



in 



o 



CO 



in 



CO 



CD — 



;^ CO 



o 



C35 



I 



CD 



CD 



in 



Gi 



o 

 c 



CD 



1 1 1 1 1 \ \ \ r 



23:16-05;15 GMT (1) X = 70 SD = 24 N = 2 



^3 05 16-11 15 GMT (2) X=96 SD = N=l 

 ^^ 1116-17 15 GMT (3) X=95 SD=0 N=l 

 I I 17 16-23:15 GMT (4) X=92 SD=1 N = 2 



/ 



n 



o 



I 



CO 



en 



in 

 I 



o 



I 



lO 



I 



o 

 CO 



I 



CD 



CO 

 I 



CD 



o 





co -- 



CO 



c^ 



o 



CD 

 I 



CO 



CO 



CD 



o 



CJ3 



I 



CO 

 CO 



' o 



in o 



Oi — 



I 1 



-^ CO 



PERCENT TIME SUBMERGED 



Figure 72. Frequency histogram of mean percent time submerged for all 6-hour summary 



periods for PTT #831 



See note in Figure 68. 



110 



