1904- 



INTERNATIONAL ANTARCTIC CO-OPERATION. 



SYNCHRONOUS CHARTS OF SEA-LEVEL PRESSURE FOR NOON GMT. 

 WITH WINDS AND AIR TEMPERATURES. 



FEBRUARY 28 I9O4- FEBRUARY 



29 



140" ISO" 160' 



3O" 20" !0" O' 



I4O* 150' I6O* 170' leo' 170* 160 ISO* 



140* 



40" 30" 20" ~'o 10" s 10" 20* 3O" 10' 



I9O4- 



MARCH 



I I9O4- 



M ARCH 



O* IO' ZO* 3O* 4O* 



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



30 20^ 



0* 10" 20* 3O" 40 



For explana-tion see Key map. 



