554 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 30° N. Long. 180° 



950 mb. + 



Mean 64.3 64.2 69.4 72.4 70.5 69.3 71.2 69.4 67.7 69.0 69.6 67.6 68.7 



Lat. 30° N. Long. 170° W. 

 950 mb. + 



Date Jan. Feb. 



Mar. 



Apr. May June July Aug. Sept. Oct. Nov. Dec. Year 



1929 63.7 66.S 



1980 

 1931 

 1932 

 1933 

 1934 



71.3 71.4 71.7 71.5 



61.2 

 65.4 

 65.8 

 68.5 

 64.5 



64.4 

 70.9 

 63.0 

 64.4 

 62.1 



69.2 

 66.0 

 66.2 

 71.3 

 67.7 



68.4 

 71.9 

 72.5 

 73.2 

 68.2 



75.2 

 72.5 

 73.7 

 72.10 

 75.1 



72.5 

 71.6 

 70.6 

 74.5 

 74.0 



1935 62.3 70.1 



1986 63.2 60.3 



1937 65.2 71.6 



1938 67.7 58.8 



1939 69.5 67.6 



Mean 65.2 65.5 69.6 73.0 71.6 70.9 72.6 70.6 68.6 



73.5 

 69.7 

 72.7 

 70.7 

 69.8 



70.0 

 74.0 

 72.5 

 73.0 

 69.7 



72.5 

 69.0 

 69.9 

 72.8 

 72.3 



69.1 

 70.2 

 71.3 

 72.6 

 68.6 



73.0 



71.3 

 70.7 

 73.7 

 74.9 



72.7 



71.7 

 72.5 

 72.8 



72.7 

 72.9 



(1.8 67.1 



68.5 

 71.0 

 70.6 

 71.8 

 69.2 



69.7 

 70.1 

 72.8 

 71.5 

 70.1 



66.7 

 70.2 

 69.7 

 72.4 

 66.5 



66.7 

 68.6 

 69.4 

 69.4 

 67.9 



68.6 



67.2 

 71.4 

 67.4 

 68.0 

 71.7 



67.6 

 65.8 

 68.3 

 70.2 

 66.4 



69.6 69.2 



69.6 

 71.0 

 68.1 

 68.4 

 69.7 



68.6 

 70.1 

 68.9 

 70.3 

 71.9 



70.3 

 75.0 

 68.1 

 60.2 

 66.8 



63.2 

 73.3 

 64.4 

 70.8 

 64.5 



3.4 69.7 67.9 



69.7 



69.1 

 70.3 

 69.1 

 69.6 

 69.0 



68.3 

 69.3 

 70.0 

 70.4 

 69.3 



69.5 



Mean 67.2 66.2 69.8 72.5 72.4 72.1 73.5 72.0 69.8 68.2 68.9 68.1 70.1 



