558 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 30° N. Long. 60° W. 



950 mb. + 



Mean 71.7 70.0 09.8 71.1 73.0 73.2 75.0 73.1 70.3 69.3 70.5 71.4 



71.5 



