INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE. 



MARCH 



NORMAL PRESSURE. 



MEAN PRESSURE, NOON, GM.T 1904- 



140 ISO 160 I7O 18O I7O I6O I5U 140 



<SO m 160' 170" 180- 170" 180 ISO 140" 



NORMAL AIR TEMPERATURE. 



MARCH 



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



140 ISO ISO" 



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



4O* 30" 20 10" O" 10" 20* 30 4O 





For explanation see Key map 



