ExGrib.Grib2.Section5.Templates.SpectralDataSimplePacking (ex_grib v0.0.1) View Source
Template 5.50
Spectral data simple packingng
Notes:
(1) Removal of the real part of (0.0) coefficient from packed data is intended to reduce the variability of the coefficients, in order to improve packing accuracy.
(2) For some spectral representations, the (0.0) coefficient represents the mean value of the parameter represented.
(3) Negative values of E or D shall be represented according to Regulation 92.1.5.
https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_temp5-50.shtml