INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



FEBRUARY 



NORMAL PRESSURE. 



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



I4O* ISO* 



4O" 30' 2O" 10* 0" 10" 20" SO" 40' 



I4O* ISO* 160' 170 I8O* _> 170* l0' ISO* 140' 





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



NORMAL AIR TEMPERATURE. 



FEBRUARY 



MEAN AIR TEMPERATURE,NOON, G.M.T. 1903. 



40" ISO" 160" 170- 180 170 160 ISO 



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



50 2O 10 O 10 2O 



For expla.na.tion see Key map 



