| Octet No. | Contents |
|---|---|
| 10 | Parameter category (see Code Table 4.1) |
| 11 | Parameter number (see Code Table 4.2) |
| 12-13 | Input process identifier (see Note 1) |
| 14-15 | Input originating centre (see Common Code table C–11 and Note 2) |
| 16 | Type of post-processing (see Note 3) |
| 17 | Type of generating process (see Code Table 4.3) |
| 18 |
Background generating process
identifier (defined by originating centre) |
| 19 |
Analysis or forecast generating process identified
(see Code ON388 Table A) |
| 20-21 | Hours of observational data cut-off after reference time (see Note 4) |
| 22 |
Minutes after reference time
data cutoff |
| 23 | Indicator of unit of time range (see Code Table 4.4) |
| 24-27 |
Forecast time in units defined
by octet 23 |
| 28 | Type of first fixed surface (see Code Table 4.5) |
| 29 |
Scale factor of first fixed surface |
| 30-33 |
Scaled value of first fixed
surface |
| 34 | Type of second fixed surfaced (see Code Table 4.5) |
| 35 |
Scale factor of second fixed
surface |
| 36-39 |
Scaled value of second fixed
surfaces |
| Note: (1) The input process identifier shall have the value of the “analysis or forecast process identifier” of the original GRIB message used as input of the post-processing. (2) The input originating centre shall have the value of the “originating centre” of the original GRIB message used as input of the post-processing. (3) This identifies which post-processing technique was used. This is defined by the originating centre. (4) Hours greater than 65534 will be coded as 65534 |