WHOLE VOL. 



LAT. 50 N. 



537 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 50° N. Long. 30° E. 



950 mb. + 



Mean 73,7 69.7 67.6 64.6 64.9 61.0 69.6 62.6 66.6 69.5 74.2 73.2 67.3 



Lat. 



50° N. Long. 50"= 

 950 mb, + 



E, 



