KSEC1 element | Contents | GRIB octet | Recommended GRIB_API keys | Coded GRIB_API keys | Comments
--- | --- | --- | --- | --- | ---
37 |
    ECMWF local GRIB use definition identifier.
    14 = Brightness temperature.
| 41 | localDefinitionNumber | localDefinitionNumber |
38 | Class | 42 | class | marsClass |
39 | Type | 43 | type | marsType |
40 | Stream | 44-45 | stream | marsStream |
41 |
    Version number or experiment identifier.
    (4 ASCII characters, right justified)
| 46-49 | expver | experimentVersionNumber |
42 | As for MARS labelling (eg set to zero, or ensemble forecast number if appropriate) | 50 | number | perturbationNumber |
43 | As for MARS labelling (eg set to zero, or total number in ensembles if appropriate) | 51 | numberOfForecastsInEnsemble | numberOfForecastsInEnsemble |
44 | Channel number | 52 | channel | channelNumber |
45 | Integer scaling factor applied to frequencies in following list of frequency definitions (4-byte integer) | 53-56 | scalingFactorForFrequencies | scalingFactorForFrequencies |
46 | Total number of frequencies (Nf) | 57 | numberOfFrequencies | numberOfFrequencies |
- | Spare (set to zero) | 58-60 |  |  |
47->(46+Nf) | List of Nf scaled frequencies (4-byte integers) | 61->(60+Nf*4) | listOfScaledFrequencies | listOfScaledFrequencies | numberOfFrequencies values.
- | Spare (set to zero) | (61+Nf*4)->1080 |  |  |