WHOLE VOL. 



NORTH AMERICA 



299 



FORT SIMPSON, CANADA 



Lat. 61°52' N. Long. 121°15' W. H^ = 415 f 1 . 



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



GRAY. AT 45° LAT. 



Means of i(4'' + 16''), 120th meridian W. 



29 inches + 



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



1931 

 1932 

 1933 

 1934 

 1935 

 1936 

 1937 

 1938 

 1939 

 1940 

 Mean 



.42 

 .58 

 .45 

 .52 

 .74 

 .83 

 .72 

 .58 

 .50 

 .81 

 .62 



.36 

 .54 

 .73 

 .61 

 .51 

 .97 

 .49 

 .86 

 .76 

 .70 

 .65 



.54 

 .76 

 .38 

 .64 

 .61 

 .66 



.52 

 .58 

 .58 

 .48 

 .61 



.62 

 .38 

 .52 

 .48 

 .65 

 .54 



.50 

 .41 

 .42 



.42 

 .40 

 .41 

 .43 

 .50 

 .44 



.40 

 .38 

 .48 

 .40 

 .40 

 .50 

 .35 

 .37 

 .48 

 .48 

 .42 



.38 

 .30 

 .38 

 .41 

 .39 

 .34 

 .39 

 .41 

 .33 

 .47 

 .38 



.49 

 .31 

 .38 

 .51 

 .38 

 .45 

 .27 

 .43 

 .32 

 .30 

 .38 



.38 

 .35 

 .30 

 .58 

 .47 

 .54 

 .50 

 .30 

 .43 

 .39 

 .42 



.24 

 .50 

 .55 

 .36 



.56 

 .50 

 .39 

 .35 

 .47 

 .39 

 .43 



.44 

 .63 

 .62 

 .49 

 .68 

 .53 

 .67 

 .46 

 .45 

 .76 

 .57 



.41 

 .54 

 .84 

 .62 

 .63 

 .54 

 .74 

 .46 

 .35 

 .51 

 .56 



TEMPERATURE IN DEGREES F. ht = 4 ft. 

 Means of -Kmean daily Max. + mean daily Min.) 



.45 

 .60 

 .63 



.56 

 .50 

 .46 

 .47 

 .65 

 ^51 



PRESSURE AT SEA LEVEL 

 1,000 mb. + 



* Mean of 12 monthly means. 



t Sum of 12 monthly means. 



