INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



OCTOBER 

 NORMAL PRESSURE. M EAN PRESSURE, N DON, G.M.T. I 9 03 . 



40* SO* 20' 10' 



4O* ISO' l0' 170* I8(T 170* 160 ISO lo' 



80 BO 



3O' 20' \0~ O' 10' 2O' 30" 40" 



NORMAL AIR TEMPERATURE. 



OCTOBER 



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



14O" ISO" 160* 170* 180* 170" 1 60" ISO* 140* 



ISO 



3O" 20" 10 O" I O " 20" 30* 40" 



4O" 3O* 



see Key map 



