INTERNATIONAL ANTARCTIC CO-OPERATION. 



SYNCHRONOUS CHARTS OF SEA-LEVEL PRESSURE FOR NOON GMT. 

 WITH WINDS AND AIR TEMPERATURES. 



1902 APRIL 19 1902 APRIL 



20 



0' 20' 50' 40' 



I 



40' 



1902 



APRIL 



21 1902 



APRIL 



22 



i4o' iso* io' iTO' ttcr no i(r \so 



40" Xf tO" 



2O' 30' 



'40- .so- iio" 170 s 160" fro 5 ieo* iso* 



140' 



30* 20* 10 



For 



ee Key m.p 



