342 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



CHICAGO, UNITED STATES 



Lat. 41°47' N. Long. 87°35' W. Hu = 823 ft.* 



PRESSURE AT STATION LEVEL: COR. TO 0° C. (32° 



GRAY. AT 45° LAT. 



Means of 4(7" + 19"), 90th meridian W. 



28 inches + 



F.) AND TO 



Mean 1.142 1.164 1.101 1.088 1.092 1.064 1.107 1.131 1.151 1.166 1.196 1.177 1.131 



TEMPERATURE IN DEGREES F. ht = 7 ft. 

 Means of Kdaily Max.+daily Min.), corrected to 24 hours 



Mean 28.1 28.3 36.0 46.3 58.8 68.8 75.0 73.4 66.7 66.1 41.0 31.0 



60.7 



TOTAL PRECIPITATION IN INCHES, h, = 3 ft. 



Mean 1.77 1.22 2.62 2.38 3.73 8.96 2.81 3.14 3.43 2.67 2.14 1.66 80.93 



* See Notes, p. 43. 



