WHOLE VOL. 



LAT. 30 N. 



563 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 30° N. Long. 90° E. 



950 mb. + 



Mean 69.4 67.3 62.7 58.8 66.4 61.4 60.8 52.7 67.2 63.5 67.5 69.1 



60.6 



Lat. 30° N. Long. 100^ 

 950 mb. + 



E. 



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



1929 



70.0 69.6 68.1 64.7 



3.1 52.7 53.3 54.5 61.2 66.3 69.5 71.1 



64.2 



Mean 71.7 69.2 65.2 61.2 68.2 63.7 62.2 63.9 69.8 66.0 70.0 71.4 62.7 



Mean 76.2 72.6 68.9 63.6 59.7 66.0 62.8 64.4 62.4 69.1 73.0 74.8 



66.2 



