i8o 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 90 



OMSK, U.S.S.K. 



Lat. 55° 1' N. Long. 73° 19' E. H = 87.3 m 



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



GRAV. AT 45° LAT. 



Means of §(7 h + 13 h + 21 h ), local meridian 



700 mm + 



M'ns 60.3 60.3 56.9 55.7 53.1 50.5 47.7 49.6 53.7 55.4 57.8 59.4 55.1 



TEMPERATURE IN DEGREES C. 

 Means of h (7" + 13" + 21 h ) H = 107.6 



Date Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Means 



M'ns —18.2 —18.7 —10.4 



0.4 10.5 18.8 19.8 16.3 10.7 



3.3 —6.2 —16.1 



0.9 



M'ns 



TOTAL PRECIPITATION IN MILLIMETERS 



6.1 



6.4 4.7 17.3 31.6 35.2 59.4 42.4 29.1 



Note: The pressures are reduced to 87.3 m, the old level used hi vol. 

 values recorded at 107.6, the new height of the station. 



24.4 15.8 7.0 279.5 



r9, by adding 1.9 mm to the 



