INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



MAY 



NORMAL PRESSURE. 



MEAN PRESSURE, NOON, GM.T. 1902. 



ISO' ISO' 170' 160" 170' 160" ISO' KO- 



bU I /U IBU 



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



2O' IO" O 10 2O 



MAY 



NORMAL AIR TEMPERATURE. 



MEAN AIR TEMPERATURE.NOON.G.MT. 1902 



ISO' 70 IBCT 170' 160 ISO 1+0 





For explana.! ion sre Key 



