io6 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 105 



SEA-LEVP]L PRESSURE AT 10' 



Lat. 70° N. Long. 

 950 mb. + 



INTERSECTIONS 



180° 



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



1929 



1930 

 1931 

 1932 

 1933 

 1934 



1935 

 1936 

 1937 

 1938 

 1939 



74.0 



G7.3 



fi7.7 

 (Ui.S 

 (i5.5 

 74.2 



GO. .3 

 76.5 

 63.5 



68.2 



72.6 67.7 



69.0 

 68.1 

 70.5 

 SO.l 

 64.1 



61.2 

 81.6 

 63.0 

 70.7 

 69.4 



74.4 

 75.5 

 70.9 

 74.8 

 71.9 



67.1 

 69.4 

 76.1 

 59.2 



75.0 



65.6 

 67.5 



65.7 

 67.5 

 60.4 



76.5 

 68.6 

 65.5 

 62.2 

 61.3 



05. 4 65.6 64.9 



t;o.i 



64.9 



Mean 69.3 70.1 71.1 66.7 



05.5 63.9 57.5 61.4 60.2 



66.4 64.8 00.8 02.7 00.1 

 70.3 68.9 64.1 63.1 59.4 



07.5 63.0 07.2 



01.6 58.7 04.4 65.7 67.2 



70.0 64.2 01.0 62.8 64.1 



60.0 01.2 60.3 61.1 68.3 



66.1 60.5 60.9 61.0 63.8 

 60.5 59.3 61.4 



67.2 65. S 



66.6 63.7 61.6 61.9 64.9 62.3 67.3 65.1 65.9 



1929 



Lat. 70° N. Long. 170° W. 

 950 mb. + 



64.8 67.0 65.2 64.9 61.6 64.5 55.3 65.3 



65.5 



Mean 67.9 67.6 69.2 66.1 64.7 63.5 61.3 61.4 61.6 59.3 65.1 64.3 64.3 



