5i8 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. IQ: 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 60° N. Long. 180° 



950 mb. + 



Date Jan. Feb. 



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



1929 



50.5 52.4 GO. 5 01. G 50.7 00.5 60.1 59.2 54.1 57.5 51.1 



58.7 50.0 OO.O 



59.3 03.0 (i3.8 



54.6 59.7 05.4 



57.8 04.3 00.8 

 54.1 02.7 59.9 



67.7 03.5 01.0 

 58.5 54.2 01.2 



62.4 59.3 01.3 

 49.7 56.8 58.6 

 54.1 64.7 65.9 



57.9 63.5 65.8 



05.1 00. G 03.9 



01.2 60.3 58.0 



63.1 58.8 62.3 

 63.6 61.6 56.9 



57.2 61.3 61.1 

 62.9 65.7 60.5 

 57.2 00.6 63.8 

 63.1 59.4 59.2 



56.'! 



56.7 



58.0 60.1 61.7 61.1 61.1 60.6 56.8 56.9 53.3 



58.5 



Lat. 60° N. Long. 170° W. 

 950 mb. + 



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



59.4 56.2 59.4 01.0 61.1 51.2 



59.0 54.4 59.9 



59.0 01.4 62.1 



54.2 57.3 62.7 



56.3 63.5 61. 9 



50.8 60.5 60.5 



65.2 62.4 01.9 



59.9 48.2 03.1 

 61.0 57.4 59.4 

 50.5 54.2 57.9 



56.4 04.4 04.0 



01.2 63.8 03.2 



64.8 62.8 60.5 



61.8 59.5 55.4 



63.8 58.0 59.1 



63.8 62.4 54.2 



60.2 60.8 59.8 



65.2 63.9 59.7 



58.6 63.3 59.3 



63.7 61.8 54.8 



Mean 55.9 56.7 58.9 57.4 58.2 61.2 62.4 61.7 57.7 53.9 54.5 53.3 57.7 



Lat. 60° N. Long. 160° W. 

 950 mb. + 



Date Jan. Feb. 



Mar. 



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



1929 59.0 56.2 57.0 59.2 58.1 



58.6 



58.7 55.6 61.6 



59.0 59.9 60.1 



54.6 57.1 60.8 

 56.2 61.3 62.9 



52.1 59.3 60.5 



62.9 61.5 61.8 



61.0 48.8 64.2 



59.0 57.8 58.4 



52.7 53.4 57.4 



58. 2 62.1 64.4 



61.7 61.1 55.1 



63.6 64.4 59.6 



63.1 63.7 58.8 



01.0 59.5 55.3 



64.1 57.7 56.2 



04.8 64.3 56.8 



62.8 61.7 60.0 

 64.5 63.3 59.5 

 00.7 63.5 58.7 



04.9 05.4 51.6 



46.1 



49.5 59.7 56.8 



Mean 56.5 56.3 58.7 57.6 57.7 



61.0 



63.1 62.5 57.2 52.1 53.9 53.4 57.5 



