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WMO GRIB2 definition
| Parameter | ||
|---|---|---|
| Discipline | 10 | oceanographic products |
| Parameter category | 0 | waves |
| Parameter number | 28 | Mean zero-crossing wave period |
| Level | ||
|---|---|---|
| Type of first fixed surface | 101 | Mean sea level |
| Scale factor of first fixed surface | 0 | |
| Scaled value of first fixed surface | 0 | |
| Type of second fixed surface | all bits to 1 | missing |
| Scale factor of second fixed surface | all bits to 1 | missing |
| Scaled value of second fixed surface | all bits to 1 | missing |