346 



ENVIRONMENTAL CONDITIONS. 



Table 19. — Normal mean relative humidities, for the year and for the -period of the average 

 frostless season, mean relative humidities for the three summer months, 1908, and normal 

 mean vapor-pressures for the year and for the period of the average frostless season. — 

 Continued. 



Station. 



Mean relative humidity. 



Annual. 



For period 



of average 



frostless 



season. 



For June, 



July, and 



August 



1908. 



Mean vapor-pressure 

 of water. 



Annual. 



For period 



of average 



frostless 



season. 



Loui siana — Continued: 



Shreveport 



Maine: 



Eastport 



Portland 



Maryland : 



Baltimore 



Washington, D. C 

 Massachusetts: 



Boston 



Nantucket 



Michigan: 



Alpena 



Detroit 



Escanaba 



Grand Haven 



Grand Rapids 



Marquette 



Port Huron 



Sault Ste. Marie . . . 

 Minnesota: 



Duluth 



Moorhead 



St. Paul 



Mississippi : 



Meridian 



Vicksburg 



Missouri : 



Hannibal 



Kansas City 



St. Louis 



Springfield 



Montana: 



Havre 



Helena 



Kalispell 



Miles City 



Nebraska : 



Lincoln 



North Platte 



Omaha 



Valentine 



Nevada : 



Carson City 



Tonapah 



Winnemucca 



New Jersey: 



Atlantic City 



New Mexico: 



Roswell 



Santa Fe 



p. ct. 

 72.9 



77.9 

 75.1 



69.5 

 72.3 



72.1 



82.1 



80.2 

 74.4 



77.5 



78.6 

 76.7 

 79.9 



75.1 

 74.1 

 71.9 



78.3 

 73.5 



70.7 

 70.3 

 69.5 

 72.6 



66.4 

 56.1 



69.7 



70.0 

 66.3 

 69.2 

 66.5 



60.2 



46.5 

 81.4 



45.4 



p. ct. 

 72.9 



81.8 



78.2 



68.6 

 73.5 



73.0 

 83.9 



77.4 

 70.2 



73.1 



74.8 

 74.2 

 78.8 



72.3 

 71.5 

 67.3 



77.6 

 73.9 



69.0 

 68.4 

 67.3 

 71.9 



56.7 

 48.0 



57.8 



66.9 

 65.3 

 66.4 

 63.8 



39.6 



30.4 



82.3 



41.6 



p. ct. 

 76 



79 

 72 



68 

 74 



69 



87 



76 

 74 

 71 

 74 

 64 

 67 

 71 

 77 



81 

 75 



68 



79 



78 



72 

 69 

 75 



62 

 56 

 61 

 59 



73 

 69 

 71 

 67 



140 

 28 

 45 



78 



63 

 60 



inch. 

 .470 



.229 

 .259 



.336 

 .343 



.280 

 .316 



.240 

 .282 

 .232 

 .273 



.222 

 .266 

 .221 



.212 

 .221 

 .247 



.474 



.322 

 .342 

 «343 



.186 

 .165 



inch. 

 .567 



.345 

 .410 



.460 



.488 



.411 

 .425 



.403 

 .437 

 .401 

 .417 



.371 

 .423 

 .374 



.355 

 .405 

 .416 



.569 



.223 



.250 

 .289 

 .222 



.148 

 .356 



,169 



.466 



.485 

 .495 



.308 

 .249 



.367 



.421 

 .463 

 .386 



.183 

 .491 



.233 



* Reno instead of Carson. 



