SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 128 



D. 5 d 1$ 17 2\ 25 



Fig. I. — Comparison of the 27.0074 cycle of precipitation in 1954 with the basic 

 tabulation of 1924 to 1941. 



1952 was 1.46 times the average daily precipitation on all others. The 

 months March, April, July, September, October, November, and 

 December of 1954 were all favorable to the prediction, and January 

 and August but little in the red. Details are given in table i. 



Summary for the year 1954: Total inches, 31.28; percent normal, 

 77.2 ; average daily precipitation : preferred days, 0.0975 ; other days, 

 0.0746; ratio: 1.3 1. 



Table i. — Details of precipitation, Washington, D.C., 1954 



Months Jan. Feb. Mar. Apr. May June 



Total inches 3.01 0.82 3.84 3.06 3.19 2.29 



Average daily, preferred . . 0.089 0.014 0.175 0.127 0.046 o.ooi 



Average daily, others 0.103 0.044 0.062 0.076 0.144 0.151 



Ratio 0.87 0.33 2.82 1.67 0.23 o.oi 



Months July Aug. Sept. Oct. Nov. Dec. 



Total inches 1.66 3.73 0.83 4.24 1.88 2.73 



Average daily, preferred .. 0.071 0.114 0.041 0.246 0.081 0.131 



Average daily, others 0.037 0.125 0.016 0.020 0.042 0.052 



Ratio 1.92 0.91 2.65 12.30 1.93 2.52 



