WHOLE VOL. 



LAT. 20 N. 



569 



SEA-LEVEL PRESSURE AT 10" INTERSECTIONS 



Lat. 20° N. Long. 90° W. 



950 mb. + 



Date Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Year 



1929 



6G.1 64.4 63.5 63.4 64.2 62.4 65.2 64.2 60.5 62.6 63.8 67.6 



Lat. 20° N. Long. 70° W. 

 950 mb. + 



64.0 



Date Jan. Feb. Mar. Apr. May June July Aug:. Sept. Oct. Nov. Dec. Year 



1929 



1930 

 1931 

 1932 

 1933 

 1934 



1985 

 1986 

 1937 

 1938 

 1939 



68.8 68.2 68.3 68.2 68.9 67.4 



69.5 

 68.0 

 68.6 

 67.6 

 68.3 



66.9 

 67.5 



68.7 

 68.4 

 69.1 



67.8 

 66.0 

 67 8 

 69.1 

 68.0 



68.1 

 67.4 

 67.5 



68.9 

 69.1 



66.1 

 65.9 

 67.4 

 68.0 



68.9 

 65.6 

 65.5 

 68.7 

 68.4 



67.5 

 66.7 

 65.3 

 65.0 

 67.1 



65.8 

 67.1 

 66.3 

 67.3 

 67.9 



67.4 

 64.8 

 64.6 

 65.5 

 66.3 



69.5 

 63.8 



64.8 

 66.2 

 66.3 



66.4 

 66.1 

 66.1 

 64.9 

 66.7 



66.4 

 64.9 

 66.9 

 68.0 

 67.3 



Mean 68.3 68.0 67.2 66.7 66.2 



66.5 



67.1 65.8 64.4 64.0 64.2 66.9 66.3 



