WHOLE VOL. 



LAT. 60° N. 



525 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 60° N. Long. 30° E. 



950 mb. + 



Mean 66.9 63.7 62.6 62.4 65.3 61.5 59.9 62.5 63.1 60.5 66.2 68.1 



63.6 



Lat. 60° N. Long. 40° 

 950 mb. + 



E. 



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



1929 



75.5 80.9 56.2 58.7 68.6 56.9 57.9 65.4 65.5 62.4 



70.0 71. S 



54.9 62.0 64.4 62.7 .58.2 77.3 



63.6 59.5 56.2 59.6 79.2 57.2 



60.3 65.6 59.7 61.2 07. 6 67.0 

 60.8 57.3 67.3 68.0 64.8 05.4 

 62.0 63.2 70.8 03.1 67.3 74.7 



53.7 61.1 57.1 62.0 81.1 72.5 



61.4 65.4 59.8 60.1 68. i; 64.1 

 67.3 67.7 63.3 69.4 69.2 71.0 

 67.0 65.6 09.4 64.9 02.5 85.4 



Mean 69.7 65.4 62.7 63.5 65.1 60.5 59.9 63.3 63.4 63.3 68.9 70.6 



65.9 



64.0 

 64.6 

 63.3 

 65.3 

 65.0 



63.5 

 64.8 

 67.3 

 64.0 



64.7 



