INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



J AN U ARY 



NORMAL PRESSURE 



MEAN PRESSURE, NOON, GM.T. \BOZ. 



I4O' ISO" ISO' 170' I8O' 170' ISO' ISO' 140' 



I4O' ISO' 160' 170' 180' 170' ISO' :5O' 



40' 30' 2O' 10' O* 10* 20' 30' 40' 



30' 20' 10' 0' 10' 2O' ^0' 4O' 



NORMAL AIR TEMPERATURE. 



J ANU ARY 



MEAN AIR TEMPERATURE, NOON, G.MT. 1902. 



160 170 160 170 ISO 



I4O' ISO" ISO" 170 160 170 



SO 2O IO O IO" 2O SO 4O 



30" 2O 10- 



IO 20 JO 



HuUi ' 



For explanation see Key m.|- 



