WMO Code table 8 - Scanning mode

      Bit
      No.

      Value

      Meaning
      10Points scan in +i direction
      1Points scan in -i direction
      20Points scan in -j direction
      1Points scan in +j direction
      30Adjacent points in i direction are consecutive
      1Adjacent points in j direction are consecutive
      4-80Reserved




      NOTES:

      1. i direction: west to east along a parallel, or left to right along an X-axis.

      2. j direction: south to north along a meridian, or bottom to top along a Y-axis.