INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



MARCH 



NORMAL PRESSURE. 



MEAN PRESSURE.NOON, G.M.T 1904. 



40* ISO" 160' 170' 180' 170* 160 ISO' 140' 



30* 20' 10' 0* 10' 20' 30' 40* 



140" ISO" l0* 



id 



40' 30" 



NORMAL AIR TEMPERATURE. 



M ARCH 



MEAN AIR TEMPERATURE.NOON, G.M.T. 1904. 



140' ISO' 160' 170' 180* 170* 160 ISO' 140* 



4O" SO* 2O* 



O* 10" 2O* 3O" 40* 



140* ISO* 160" 170^ ISO* 170* 160^ ISO* 140* 



3O" 20^ 10* 0* 10* 2O 



on don 



For explanation see Key map 



