FIG. 26 MONTHLY PERCENT EFFLUENT AT EACH STATION IN SAFE HARBOR FROM AUGUST. 1970 

 TO AUGUST, 1971. INNER EDGE REPRESENTS CONCENTRATIONS AT STATION A, 

 OUTER EDGE, STATION B. 



Each radius represents -\Z in the center, 

 +k% on the circumference. 



Each radius is numbered as the hours on a watch and represents that month. 

 Values are read from the center to the circumference. 



78 



