304 



ROCHESTER ACADEMY OF SCIENCE. 



[^lay 28, 



Percentages of Seasonal Distribution. 



Average Rainfall, in inches. 



Probability of Rainy Days {percentage). 



Rochester, 



Boston, 



San Francisco, 



Portland, 



Greatest Daily Rainfall, in inches. 



Rochester, 

 Alexandria, La., 

 Helena, Ark., 

 Mayport, Fla., 

 Hatteras, N. C.,. 

 New Orleans, 

 Ft. Wallace, Kan., 



4.19, August 19, 1S93 



21.00, in two days. 



12.00, in forty hours. 



14.00, in one day. 



9.00, 



9.00, " 



9.00, 



Rochester, 

 Boston, 

 Yankton, 

 San Francisco, 

 Portland, 



Cloi(di7iess. 



Average of extremes, in percentage. 



Highest. Lowest. 



83 (Dec.) 44 (Aug.) 



56 (Dec.) 51 (Aug.) 



51 (Mar.) 39 (Sept.) 



48 (Jan ) 32 (Oct.) 



72 (Jan.) 35 (Aug.) 



