'903 



INTERNATIONAL ANTARCTIC CO-OPERATION. 



SYNCHRONOUS CHARTS OF SEA-LEVEL PRESSURE FOR NOON GMT 



WITH WINDS AND AIR TEMPERATURES 

 APRIL 14 I9O3 APRIL 



30' 20" 10 10 20 30 



SO 2O 10 O 10 20 30 



'90S 



APRIL 



70 ISO ISO 140' 



iso iso" (70 ISO- no ieo iso 140' 



30 20 10 O 10 20 3O' 



30 20 10 



For explnnaut ion see Key map 



