500 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 80° N. Long. 0° 



950 mb. + 



Lat. 80° N. Long. 10° E. 

 950 mb. + 



Mean 55.4 66.4 65.2 67.3 67.6 63.2 63.6 61.1 60.9 57.9 57.3 57.1 



61.1 



