12 Table 2 DPM Sr90/Ft2 Denosited by 1955 Rains and Snows Pittsburgh Jariary Pebruary Weshinegten, D.C. 6.6 (1,20") ~18,6#(1,51") 39,0 (2.7") viarch hh.9 (2.17") 25.2 (2.L0") 56.5 (3.L9") acrid 29.7 (2,42) 83.6 (4&4) 75.3 (2.33") May 105.0 (2.66") 120,1 (1,62") Jone ~67 8%(2.77") 50.3 (2,82") July 31.6 (2.63") 78 6 (2.35") Ancust 13.0 (6.40") Scptemocr 10,6 (1,57") 8.3 (1,6") October 27.5 (6.12") 31.7 (3.27") yovoember 18,2 (1.77") 15.6 (2.79") Deccmber 545 (O.47") 133.0 (6.95" 79 - NYOO * Based on assay of two thirds of total monthly rainfall.