— 



USE OF ANNUAL PLANTS IN CALIFORNIA FOOTHILLS / 



Table 1. — Monthly precipitation at San Joaquin Experimental Range, 

 September 193 4- August 19 48 



Year 



Sept. 



Oct. 



Nov. 



Dec. 



Jan. 



Feb. 



Mar. 



1934-35 



Inches 



0.00 



.00 



.00 



.00 



.14 



1.28 



.00 



.00 



.00 

 IT 

 .05 

 .07 



.00 



.28 



Inches 



2.22 



1.63 



2.17 



.03 



1.37 



.86 



1.56 



1.13 



.00 

 .23 



1.05 

 1.69 



1.58 

 1.64 



Inches 



3.39 



.52 



.10 



.50 



.75 



.03 



.10 



1.21 



1.98 



.56 



4.98 



1.46 



4.26 

 .68 



Inches 

 3.64 

 1.56 

 5.16 

 6.23 



1.28 



.64 



8.26 



8.11 



2.14 

 2.37 



2.83 

 3.83 



3.88 

 .83 



Inches 

 5.76 

 3.67 

 3.22 

 5.99 



2.87 

 9.94 

 3.68 

 2.93 



4.63 



2.45 



.31 



.91 



.51 

 .06 



Inches 

 3.21 



11.20 

 7.08 

 7.75 



2.50 

 5.87 

 7.50 

 2.06 



2.23 

 4.73 

 4.48 

 2.02 



1.51 

 1.34 



Inches 

 4 85 



1935-36 



2 47 



1936-37 



4 58 



1937-38__. 



8 69 



1938-39 __ 



2 89 



1939-40 



2 15 



1940-41 



2 76 



1941-42 



1942-43 



1943-44 



1.98 



5.09 

 1 05 



1944-45 



1945-46 



1946-47 



1947-48 



4.56 

 3.26 



.94 

 4.27 



14-year mean 



.13 



1.23 



1.47 



3.63 



3.35 



4.53 



3.54 



Year 



Apr. 



May 



June 



July 



Aug. 



12-month 

 total 



1934-35 



1935-36 . 



1936-37 



1937-38 



1938-39 



1939-40 



1940-41 



1941-42 



1942-43 



1943-44 



1944-45 



1945-46 



1946-47 



1947-48 



Inches 



6.33 



1.35 



.65 



2.69 



.26 



.43 



4.44 



2.81 



1.17 



1.78 



.32 



.06 



.44 

 4.13 



Inches 



0.00 



.15 



.00 



.02 



.03 



.00 



.02 



1.31 



.00 

 .58 

 .35 

 .56 



.57 

 1.26 



Inches 



0.00 



.04 



.00 



.00 



.14 

 .02 

 .00 

 .00 



.00 

 .04 

 .05 

 .00 



.03 



.01 



Inches 



0.00 



.06 



.00 



.19 



.00 

 .00 

 .00 

 .00 



.00 



.00 



T 



T 



.00 

 .00 



Inches 



0.00 



.00 



.00 



.00 



.02 

 .00 

 .01 

 .00 



.00 

 .00 

 .01 

 .00 



.00 

 .00 



Inches 

 29.40 

 22.65 

 22.96 

 32.09 



12.25 

 21.22 

 28.33 

 21.54 



17.24 

 13.79 

 18.99 

 13.86 



13.72 

 14.50 



14-year mean 



1.92 



.35 



.02 



.02 



T 



20.18 



!T = trace. 



Air temperatures, relative humidity, and wind movement were measured 

 at a standard Weather Bureau station at the headquarters, at an eleva- 

 tion of 1,050 feet. Precipitation was measured as an average of readings 

 from two standard rain gages, one at headquarters and one at a rainfall- 

 runorT station in pasture 7 at an elevation of 1,100 feet. The records of 

 precipitation and air temperature are summarized in tables 1 and 2. 



