538 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 50° N. Long. 60° E. 



950 mb. + 



Mean 83.2 77.5 78.5 69.4 65.1 58.8 56.0 60.8 67.3 74.1 79.3 80.1 70.4 



