INTERNATIONAL ANTARCTIC CO-OPERATION. 



SYNCHRONOUS CHARTS OF SEA-LEVEL PRESSURE FOR NOON GMT 



1903 



APRIL 



WITH WINDS AND AIR TEMPERATURES 

 10 1903 



APRIL 



70 ISO 170 160 



I4O" ISO" 160* 170* ISO 170" 160 ISO" 140 



JO' 20" 10 O" 10" 20" 30" 



10" 20" 30' 4O" 



I9O3 



APRIL 



1903 



APRIL 



13 



I4O* ISO* 160* 170 IBO i70 1 60 ISO 140' 



For explanation see Key map 



