INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSUREAIND AIR TEMPERATURE. 



OCTOBER 



NORMAL PRESSURE. 



MEAN PRESSURE.NOON, G.M.T. 1901. 



140* ISO 



30' 20' 10" O' 



NORMAL AIR TEMPERATURE. 



OCTO B ER 



MEAN AIR TEMPERATURE, NOON.G.M.T. 1901. 



HO' ISO* 160' 170* 180" 170 160* ISO' 



4O 30" 20 



I4O" ISC' 



For expl a.na,t ion see Key map 



