INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



OCTOBER 



NORMAL PRESSURE. 



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



I4O* ISO" 160' 170' 180* 170* 160* ISO* 140' 



30" 20" 10' 0' 10" 20' 3O' 40' 



I4O' ISO* 160' 170* ISO* 170* 160 ISO* 140' 



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



NORMAL AIR TEMPERATURE. 



OCTOBER 



MEAN AIR TEMPERATURE,NOON,G.M.T. \90Z. 



ISO' ISO' 170 180' 170' 160 ISO' 140' 



160' 170' ISO 170 160' 



50' 20 10' 10 20 30 



50 20 10 O" 10 2O' 30' 



For explana-tiori see Key map 



