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INTERNATIONAL ANTARCTIC CO-OPERATION. 



CHARTS OF MEAN SEA LEVEL PRESSURE AND AIR TEMPERATURE . 



DECEMBER 



NORMAL PRESSURE. 



MEAN PRESSURE, NOON, G.M.T. 1902. 



IO" ISO" I6O" I7O" 180* 170" <e<f ISO" 140" 



,- 



IW 30- 



40* so" 20" 



I4O ISO 160" 170 160^ 170 160 ISO 140" 



30" 20" 10" 0" 10" 20" SO" T 



NORMAL AIR TEMPERATURE. 



DECEMBER 



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



MO" lt>0* IO" 170" IBCT 170 160 ISO* 1+0 



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



/ 









iQ 



4O* SO* 



10* O 10" 20* 3QT _jg^ 



For explt.na.tion sec Key map 



