INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



MAY 



NORMAL PRESSURE. 



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



1*0 ISO 160 170 ISO 170 160 150 140 



SO* 20* 10' 0* 10* 20' 3O' 40* 



'40' 150' 160' 170' IgQ* I7C* l0* HO* 140* 



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





NORMAL AIR TEMPERATURE. 



MAY 



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



I4O* ISO* ISO* 170' I6CT 170' ISO' ISO' 140' 



3O 20 10 O 10 20 30 



30 



I4O* ISO* 160' I7O' 160' 170' 160* 150* 140* 



40' 30' 20' 10' 0* A" 



For explana-tion see Key map 



