INTERNATIONAL ANTARCTIC COOPERATION 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



SEPTEMBER 



NORMAL PRESSURE 



MEAN PRESSURE, NOON, G.M.T 1903. 



140- 





30" 20' 10* O" 10* 2O' 30" 



NORMAL AIR TEMPERATURE. 



SEPTEMBER 



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



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



4O" 3C" 20" 10" 0" 10" 20* 3O' 4O* 



I4O' ISO" ISO" 170" ISO" ,70' '60' ISO" 



SO" 20 10" O" IO" 20 



Huth. London 



For explanation see Key 



