INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



FEBRUARY 



NORMAL PRESSURE. 



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



3O" 20* 10* 0" 10' 20' 30' 40" 



I4O ISO 160 170 180" 170 160 ISO 



40" 



NORMAL AIR TEMPERATURE. 



FEBRUARY 



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





I4O \6Q _ J60 170 



170 160 150 140" 



M 50 



49* 30" 20" |0* o" 10" 20" 3O" 40" 



I4O' ISO" 160* I7* 180' 170' 160' ISO' 140' 



3O" 20 10" O* 10" 2O" 30" 



For expla.na.tion see Key map 



