556 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 30° N. Long. 120° W. 



950 mb. + 



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



1929 



1935 

 1936 

 1937 

 1938 

 1939 



68.3 69.6 69.1 68.5 65.8 64.3 65.3 63.9 62.7 65.4 67.2 



1930 67. 9 



1931 69.3 

 1982 70.3 



1933 68.5 



1934 71.2 



68.7 

 67.3 

 G8.8 

 68.8 

 68.9 



68.5 

 64.9 

 67.4 

 71.1 

 69.2 



69.6 

 67.9 

 69.8 

 68.0 

 70.8 



65.8 

 67.3 

 68.2 

 69.0 

 68.0 



68.5 

 65.8 

 66.9 

 67.9 

 69.2 



66.0 

 64.0 

 65.5 

 66.4 

 66.6 



65.9 

 67.6 

 67.0 

 66.9 

 67.0 



66.2 

 64.5 

 65.9 



67.8 

 64.6 



65.0 

 64.8 

 64.4 

 64.7 

 65.8 



63.9 

 64.5 

 62.9 

 65.9 

 65.1 



64.4 

 62.9 

 64.3 

 64.0 

 04.0 



64.5 

 61.1 

 64.5 

 63.1 

 65.0 



64.1 

 62.6 

 64.1 

 65.4 

 65.4 



65.6 

 64.3 

 62.6 

 62.7 

 65.1 



61.9 

 63.6 

 64.3 

 64.6 

 64.5 



65.0 

 63.0 

 64.2 

 62.3 

 63.1 



63.4 

 61.8 

 63.4 

 63.6 

 62.4 



63.3 

 65.2 

 65.6 

 65.7 

 66.3 



65.3 

 64.8 

 64.9 

 66.0 

 65.7 



66.8 

 67.0 

 68.1 

 68.2 

 67.8 



68.0 

 67.3 

 68.4 

 68.2 

 67.8 



68.1 



69.0 

 68.1 

 69.2 

 70.6 

 67.8 



67.9 

 67.0 

 67.2 

 68.0 

 69.1 



66.5 



66.0 

 65.8 

 66.2 

 66.8 

 66.7 



66.1 

 65.3 

 66.1 

 66.3 

 66.7 



Mean 68.9 68.8 67.8 66.5 65.4 64.2 64.1 63.9 63.2 65.3 67.7 68.4 66.2 



Mean 66.5 66.0 63.8 62.0 60.4 59.4 60.5 60.8 60.0 62.5 65.8 67.1 62.9 



Lat. 30° N. Long. 100= 

 950 mb. + 



W. 



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



1929 



1930 

 1931 

 1932 

 1933 

 1934 



1986 

 1936 

 1937 

 1938 

 1989 



67.5 



71.5 

 70.7 

 67.5 

 67.0 

 69.9 



69.5 

 67.8 

 65.6 

 69.2 

 67.6 



67.0 62.9 01.5 63.7 61.5 65.2 65.0 



67.3 

 66.9 

 65.7 

 69.1 

 70.2 



70.3 

 65.7 

 67.5 

 70.0 

 66.0 



66.0 

 67.0 

 65.8 

 64.3 



68.7 



63.2 

 62.2 

 66.8 

 62.6 

 65.9 



64.6 

 66.5 

 63.1 

 61.0 

 63.8 



61.9 

 66.2 

 61.6 

 64.7 

 63.9 



62.7 

 63.8 

 63.8 

 59.5 

 63.7 



61.0 

 62.8 

 62.7 

 61.5 

 60.5 



62.8 

 63.4 

 60.3 

 64.1 

 60.6 



61.5 

 61.9 

 62.4 

 63.9 

 61.0 



65.5 

 62.5 

 63.4 

 62.7 

 63.5 



64.9 

 65.8 

 61.9 

 63.0 

 64.3 



64.0 62.7 



63.7 63.8 



63.7 63.6 



63.8 64.8 



03.5 



63.0 

 63.9 

 64.4 

 61.5 

 63.3 



64.0 

 62.9 

 64.6 

 65.6 



3.4 70.6 71.6 



65.1 

 66.1 

 65.5 

 65.9 

 66.3 



66.7 

 67.3 

 65.7 

 66.9 



69.9 

 66.7 

 71.3 

 70.3 

 66.4 



71.9 

 68.0 

 69.4 

 68.3 

 70.4 



65.6 



66.3 

 65.9 

 65.2 

 64.7 

 65.9 



68.5 70.1 65.3 



72.7 68.8 66.6 



69.1 69.5 65.2 



69.2 69.6 66.0 



Uean 68.5 67.8 65.0 63.5 62.3 62.1 63.8 64.0 63.7 66.2 69.5 69.8 65.5 



