INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



FEBRUARY 



NORMAL PRESSURE. 



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



l0* ISO' l0' 170' I8* 170' I8* 150' 140' 



I4O' ISO' 160' 170' IgO* 170' 180 ISO* 140' 



SO" 20' IO' 0* 10* 20' SO' 4O' 



NORMAL AIR TEMPERATURE. 



FEBRUARY 



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



For explanation see Key 



