WHOLE VOL. 



LAT. 



70° 



511 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 70° N. Long. 30° W. 



950 mb. + 



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



63.3 64.7 



56.2 55.1 



53.5 



43.9 



63.3 64.7 69.5 



62.9 62.0 62.7 



63.7 56.5 60.1 

 57.5 56.2 56.6 



62.8 61.6 58.3 



58.3 58.9 67.3 



63.1 57.5 62.5 



61.2 55.9 57.2 



60.3 59.8 56.3 



61.1 



59.3 54.1 48.3 59.9 

 60.9 47.2 53.8 61.5 

 60.2 56.3 47.6 61.0 

 64.8 57.0 54.0 58.8 



58.4 56.2 57.8 59.4 



54.4 55.3 66.5 61.6 



53.7 53.5 48.8 61.6 



59.7 62.7 61.2 60.0 



49.6 53.7 53.7 57.2 



Mean 54.1 58.4 64.5 67.8 67.1 63.4 61.6 59.8 60.7 57.6 55.0 53.6 60.3 



Lat. 70° N. Long. 20° W. 

 950 mb. + 



Mean 53.4 57.8 63.5 



66. 



67.5 62.8 61.3 59.3 60.0 55.7 53.6 53.4 59.6 



