1904- 



INTERNATIONAL ANTARCTIC CO-OPERATION. 



SYNCHRONOUS CHARTS OF SEA-LEVEL PRESSURE FOR NOON GM.T. 



WITH WINDS AND AIR TEMPERATURES. 

 FEBRUARY 12 1904- FEBRUARY 





I4O* ISO* 160' 170* 180* 170* 160' 150* 140* 



140* ISO* 160* 170* I6O* 170' ISO' ISO* 



3O' 10' -S " !0* 0* 10* 20* 30' 40* 



30' 20 I0 - IO 20 30 



FEBRUARY 



FEBRUARY 



140 160 170 180 170 160 



140* ISO* 160* 170 180" 170* 160 150 



40 Mr 20 to" n* m" 9t\* -n 



20 10 O 10 20 30 



For explanation see Key map. 



