INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



OCTOBER 



NORMAL PRESSURE. 



MEAN PRESSURE, NOON, G.M.T. 1902. 



I4O' 150 160' 170' 180* 170' 160* ISO' HO' 



I4O' ISO' ISO' 170 ISO* 170' ISO ISO 140' 



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



NORMAL AIR TEMPERATURE. 



OCTOBER 



MEAN AIR TEMPERATURE, NOON, G.M.T. I90a. 



140" ISO" 160* 170' ISO* 170 160* ISO* 140" 



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



I4O" 150 160" 170" 160* '70 160* ISO' 140' 



,0 



IK 



30* 20 10" O" 10" 20 30 



For explana-tion see Key map 



