INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



JAN U ARY 



NORMAL PRESSURE. 



MEAN PRESSURE.NOON, G.M.T. 



140* [SO* 160" 170 \Q(Y I'D* 



L 



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



SO' 20" 10' 0' 10" 20' ^0' *0' 





NORMAL AIR TEMPERATURE. 



J ANU ARY 



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



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



4O' 30" 20^ 10 s s ItP 20' 30' 40 



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



JO" 2O*" 10' O' 10' 20' 3O' 



Huth. London 



For explana-tion see Key map 



