INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



JUNE 



NORMAL PRESSURE. 



MEAN PRESSURE, NOON, G.M.T. I9O2. 



140* ISO' l0' 170' 180" (10' 160' ISO' 



140 ISO* ISO 170 I80r 170 160 180 140* 



40' 30' 20' 10* s 10' Z<f 30' 40' 



40" 30' 20' 10* <T 10* 20' 30* 40" 



JUNE 



NORMAL AIR TEMPERATURE. 



MEAN AIR TEMPERATURE.NOON, G.M.T. 1902. 



1*0* 1*0* 170 IMT 170' 160 ISO 140' 



4O' ISO' 160' in 180 170' 180' ISO' 140' 



40' SO' 2O 



F'or expl&na.t IOTI see Key m&p 



