INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SE.A LEVEL PRESSURE AND AIR TEMPERATURE. 



JANUARY 



NORMAL PRESSURE 



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



40" 150" 160" 170" 160* 170" 160" 150' 1 40' 



loo 



40" 50" 20" 10" 



1*0" iso" lee" i7o" leo" no" ieo 150' 



uo 



40" 



3O' 20' 10" O" 10" 20 



NORMAL AIR TEMPERATURE. 



JAN UARY 



MEAN AIR TEMPERATURE, NOON.G.MT. 1903. 



140 ISO ISO 170 180" 170 160 ISO 140' 



0" i70" 160 ISO 



30 20 10 O 10 2O 3O 



so" 20" 10 IO ZO JO 



Huth. L ondoii 



For expl.n-tion see Key map 



