INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



MARCH 



NORMAL PRESSURE 



MEAN PRESSURE, NOON, GM.T. 1903. 



30' 20' 10' O' 10* ZO' 30' 



3O" 20' 10* O' 10' 20' 30' 



40' 



MARCH 



NORMAL AIR TEMPERATURE. 



MEAN AIR TEMPERATURE, NOON, G.MT. 1903. 



1*0' ISO' 160' 170' 180 170 160 ISO' 



40 30 20' 10' O' 10" 20" 30' 4O' 



I4O' 



ISO' 160' 170' 180' 170' 160' 



0' 3O' 2O' 10' O' 10' 20' 30' Vf 





For explanation see Key map 



