522 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 60° N. Long. 60° W. 

 950 mb. + 



Mean 53.0 55.0 58.1 61.6 59.8 58.4 55.8 56.8 56.7 54.8 52.4 53.8 56.4 



Mean 48.3 52.1 55.6 60.4 58.9 59.7 57.9 58.2 57.2 55.6 51.3 49.1 



55.4 



Lat. 60° N. Long. 40° W 

 950 mb. + 



Mean 46.G 52.4 55.1 61.2 G0.3 60.8 60.0 59.3 57.7 56.0 51.0 46.7 



55.6 



