INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



JANUARY 

 NORMAL PRESSURE. M EAN PRESSURE, N DON, G.M.T. I 904 . 



140" ISO* 160* 170" ISO* 170" 180 150 140* 





40' 30' 20' 10' O* 10* 20' 3D' 40' 



l0' ISO* IO' 170' IBO* 170' HO* ISO 1 140' 



40' 30' 20' 10' 0" 



NORMAL AIR TEMPERATURE. 



JANUARY 



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



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



I4O* ISO* 160* 170' ieO* 170' 160* ISO* 140' 



40" 30' 20 10' O' 10 20 3O 



Hvrth. London. 



For explanation see Key ma,p 



