Here is a fortran snippet to read the formatted ascii data:

       dimension antarc(360,51)

       do iyear=1950,2002
          do imonth=1,12
             read (11,2099) nmonth,nyear
             read (11,2100) ((antarc(i,j),i=1,360),j=1,51)
          end do
       end do
2099   format(i4,i6)
2100   format(8f15.3)


The gridpoint antarc (1,1) should be at 0E, 90S.