VISIBILITY (M) 
VISIBILITY (H) 
~ ANNUAL 80-81 
ANNUAL 1982 
0.01 0.10 1.00 10.00 25.00 50.00 75.00 90.00 99.00 99.90 99.99 
PERCENT GREATER THAN 
Figure 33. Comparison of annual surface water 
visibility distributions 
JAN «6FEB «OMAR OAPR OMAY) «6JUN «OKLSCOAUGSCSEP = OCTT.-«Ss NOV. SCODEC:Cs ANN 
TIME 
Figure 34. Mean surface water visibility 
for 1980-1981 and 1982 
70 
