| Octet No. | Contents |
|---|---|
| 10 |
Parameter category (see Code table 4.1) |
| 11 |
Parameter number (see Code table 4.2) |
| 12 |
Type of wave period interval (see Code table 4.91) |
| 13 |
Scale factor of lower wave period limit |
| 14-17 |
Scaled value of lower wave period limit (see Note 1) |
| 18 |
Scale factor of upper wave period limit |
| 19-22 |
Scaled value of upper wave period limit (see Note 1) |
| 23 |
Type of generating process (see Code table 4.3) |
| 24 |
Background generating process identifier (defined by originating center) |
| 25 |
Analysis or forecast generating process identifier (defined by originating center) |
| 26-27 |
Hours of observational data cut-off after reference time (see Note 2) |
| 28 |
Minutes of observational data cut-off after reference time |
| 29 |
Indicator of unit of time range (see Code Table 4.4) |
| 30-33 |
Forecast time in units defined by previous octet |
| 34 |
Type of first fixed surface (see Code Table 4.5) |
| 35 |
Scale factor of first fixed surface |
| 36-39 |
Scaled value of first fixed surface |
| 40 |
Type of second fixed surface (see Code Table 4.5) |
| 41 |
Scale factor of second fixed surface |
| 42-45 |
Scaled value of second fixed surface |
| Notes: (1) Wave periods should be specified in seconds (2) Hours greater than 65534 will be coded as 65534 |