WMO Code table 10 - Spectral data representation mode

      Code
      figure

      Meaning
      1The complex numbers Xnm, (see code figure 1, Code table 9) are stored for m >= 0 as pairs of real numbers Re(Xnm), Im(Xnm) ordered with n increasing from m to N(m), first for m = 0 and then for m = 1, 2, ... M. The real part of the (0,0) coefficient is stored in octets 12-15 of the Binary data section. The imaginary part of the (0,0) coefficient and the remaining coefficients are packed, and are stored in octets 16 onwards of the Binary data section.
      2Indicates spherical harmonics - complex packing.