AVERAGE PERCENT TIME SUBMERGED DURING A FOUR HOUR 



SUMMARY PERIOD 

 PTT 843 - 1989 

 120 



g 100 

 a: 



m 



^ 80 



w 



z 

 w 

 o 

 Qi 

 W 

 CL 



Cd 



o 



> 



60 - 



40 



20 - 







T 



ERROR BARS 



1 S.D. 



6 



O 



6 







0-4 



I I I \ 



8-12 12-16 16-20 20-24 



4-8 

 TIME OF DAY (HOURS GMT) 



Figure 66. A comparison of the average percent time submerged between 4-hour summary 

 penods for PTT #843. 



102 



