INTERNATIONAL ANTARCTIC CO-OPERATION. 



1904- 



SYNCHRONOUS CHARTS OF SEA-LEVEL PRESSURE FOR NOON GMT 



WITH WINDS AND AIR TEMPERATURES 

 MARCH 31 



4O 3O' 



140* ISO 



:*'!' ISO' 160' 180' 



I4O - ISO' IWT 170' 180" IW 160' ISO 1*0 



*O ZO O 10 20 3O *O 



For expla.na.tion see Key map 



