INTERNATIONAL ANTARCTIC CO-OPERATION. 



190.3 



SYNCHRONOUS CHARTS OF SEA-LEVEL PRESSURE FOR NOON GMT. 



WITH WINDS AND AIR TEMPERATURES 

 APRIL 18 I9O3 APRIL 



19 



1+0" ISO" 160" 170* 160* 170" 160 ISO" 



SO" 20" ' \0" O* 10" 20" 30' 40" 



1*0" ISO* 160" ITO 



9(3 



30' 20' 10* 0" 10" 20' SO" 



1903 



APRIL 



ZO 1903 



APRIL 



^\ 



140" ISO" 160" 110* 180" 170" I6O' 



3O" 20" 10" O" IO" 20" 30* 



For explanation see Key map 



