INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



JAN U ARY 

 NORMAL PRESSURE M EAN PRESSURE, N OON, G.M.T I 9 4 . 



30' 20' 10' O* 10' 2O" 30' 



NORMAL AIR TEMPERATURE. 



JAN U ARY 



M EAN AIR TEMPER ATURE,NOON,G.MT. 1904. 



160 170 ISO I7O 160 



40 30 20 10 O IO" 20' 30' 4O" 



40' SO' 20 



Hut-h " 



For expla.nat.ioTi see Key 



