INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTSOF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



MAY 



N ORMAL PRESSURE. 



MEAN PRESSURE, NOON, G.M.T. 1903. 



140' ISO* ISO' 170' I6O* 170' 160 ISO' 



I4O ISO 160 170 180 170 160 ISO 



IK? 



NORMAL AIR TEMPERATURE. 



MAY 



MEAN AIR TEMPERATURE, NOON, G.MT. 1903 



160" 170' 160 170' 160' 



4O' 30 20 10 O* 10' 2O' 3O* 4O* 



40- 30' 20 10 O IO 20 3D 



Hutlv London 



For expl.na,t.ion see Key ma,|> 



