570 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 20° N. Long. 60° W. 



950 mb. + 



Mean 69.5 69.2 



69.2 69.5 70.2 70.0 68.2 66.9 66.2 66.2 68.4 68.6 



Lat. 20° N. Long 40° W. 

 950 mb. + 



Mean 69.6 69.2 69.6 69.3 G9.8 70.5 70.0 68.3 67.5 67.2 67.2 68.9 



68.9 



