WHOLE VOL. 



LAT. 30 N. 



557 



SEA-LEVEL PRESSURE AT 10° INTERSECTIONS 



Lat. 30° N. Long. 90° W. 



950 mb. + 



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



1929 70.1 



65.7 07.7 65.0 



64.9 67.0 69.8 73.3 



67.8 



Mean 71.1 70.0 68.7 C8.8 68.7 68.7 70.4 69.0 67.5 66.7 68.7 70.3 



69.1 



