Lysimeter Experiments 



99 



TABLE 6. Records of the United States Weather Bureau 

 At Rochester, New York 



Years 



Month 



Precipitation 

 (inches) 



Mean 

 during 

 month 



Monthly 



mean 

 since 1872 



Temperature of air 



in shade 

 (degrees Fahrenheit) 



Mean 

 during 

 month 



Monthly 



mean 

 since 1872 



Humidity of air 

 (per cent) 



Mean 

 during 

 month 



Monthly 



mean 

 since 1872 



1896-1916 

 1896-1916 

 1896-1916 

 1894-1916 

 1892-1916 

 1892-1916 

 1891-1916 

 1891-1916 

 1891-1916 

 1891-1916 

 1895-1916 

 1895-1916 



January. . . 

 February. . 

 March. . . . 



April 



May 



June 



July 



August. . . . 

 September. 

 October . . . 

 November . 

 December . 



Total. . 

 Means. 



2.99 

 2.69 

 3.08 

 2.35 

 2.95 

 2.72 

 3.11 

 2.98 

 2.29 

 2.38 

 2.21 

 2.72 



3.10 



2.70 



2.94 



2.41 



2.99 



*2.91 



*3.05 



*2.93 



*2.39 



*2.77 



2.53 



2.80 



25.8 

 22.8 

 33.1 

 45.6 

 57.2 

 66.2 

 71.3 

 69.0 

 63.2 

 51.7 

 39.8 

 28.9 



24.8 



23.7 



31.5 



44.5 



56.7 



*66.0 



*71.0 



*68.8 



*62.8 



*50.9 



38.8 



28.8 



32.47 



*2.80 



47.9 



*47.4 



77.5 

 77.5 

 74.0 

 68.0 

 67.5 

 67.5 

 68.5 

 71.0 

 74.0 

 75.0 

 75.5 

 77.5 



73.0 



79.5 



78.5 



75.5 



68.0 



66.5 



68.0 



*68.5 



*70.5 



*73.0 



74.5 



76.0 



79.0 



*73.0 



* Data for one year missing. 



At Ithaca, New York 



99 



