INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



FEBRUARY 



NORMAL PRESSURE. 



MEAN PRESSURE, NOON, G.M.T. 1904. 



140' ISO* l0* 170' IB* 170* I6' ISO* 140* 



I4O* I BO* IBP* IX 180* 170' HO 150* I4Q' 



id 



SO' 20' 10' 0* 10' 20" 30* 



NORMAL AIR TEMPERATURE. 



FEBRUARY 



MEAN AIR TEMPERATURE.NOON, G.M.T. 1904. 



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



4O" 3O" 20" 10" O" 10* 20" 3O* 40" 



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



3O" 20 10" O* 10* 20 30 



For explanation aee Key m*tp 



