INTERNATIONAL ANTARCTIC CO-OPERATION. 



SYNCHRONOUS CHARTS OF SEA-LEVEL PRESSURE FOR NOON G.M T. 

 WITH WINDS AND AIR TEMPERATURES 



APRIL 27 1902 APRIL 



28 



1902 



APR I L 



29 I9O2 



APRIL 



30 



iso' tea' no' 180" no' ieo" iso" 140" 



40" 3O' 20' 10" O" 10' 20" 30" 



140" ISO" 160" 170" 160" 170" 160" ISO" 



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



For explanation see Key m&p 



