INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



SEPTEM B ER 



NORMAL PRESSURE. 



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



I5CT ISO 170' ISO' 170" 160 ISO" 



SEPTEMBER 



NORMAL AIR TEMPERATURE. 



MEAN AIR TEMPERATURE,NOON, G.M.T. 1902. 



ISO* 160' 170* I8CT 170" ISO 150 1+0 



I4O* ISO* 160* 170 I8O* 170* 160 



30' 20* 10* - ID' 20 



For expls.na.tion see Key map 



Huth Lor.don 



