| Octet No. | Contents |
|---|---|
| 10 |
Parameter category (see Code table 4.1) |
| 11 |
Parameter number (see Code table 4.2) |
| 12-13 |
Parameter number (see Note 1) |
| 14-15 |
Input originating center (see Note 2 and Common Code table C-11) |
| 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 center) |
| 19 |
Forecast generating process identifier (defined by originating center) |
| 20-21 |
Hours after reference time of data cut-off (see Note 4) |
| 22 |
Minutes after reference time of data cut-off |
| 23 |
Indicator of unit of time range (see Code table 4.4) |
| 24-27 |
Forecast time in units defined by octet 23 (see Note 5) |
| 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 surface (see Code table 4.5) |
| 35 |
Scale factor of second fixed surface |
| 36-39 |
Scaled value of second fixed surface |
| 40-41 |
Total number of quantiles q |
| 42-43 |
Quantile value (between 0 and q) |
| 44-45 |
Year of end of overall time interval |
| 46 |
Month of end of overall time interval |
| 47 |
Day of end of overall time interval |
| 48 |
Hour of end of overall time interval |
| 49 |
Minute of end of overall time interval |
| 50 |
Second of end of overall time interval |
| 51 |
n - number of time range specifications describing the time intervals used to
calculate the statistically processed field |
| 52-55 |
Total number of data values missing in statistical process |
| 56-67 Specification of the outermost (or only) time range over which statistical processing is done |
|
| 56 |
Statistical process used to calculate the processed field from the field at
each time increment during the time range (see Code table 4.10) |
| 57 |
Type of time increment between successive fields used in the statistical processing
(see Code table 4.11) |
| 58 |
Indicator of unit of time for time range over which statistical processing is done
(see Code table 4.4) |
| 59-62 |
Length of the time range over which statistical processing is done, in units defined by the previous octet |
| 63 |
Indicator of unit of time for the increment between the successive fields used
(see Code table 4.4) |
| 64-67 |
Time increment between successive fields, in units defined by the previous octet (see Notes 3) |
| 68-nn These octets are included only if n > 1, where nn = 55 + 12 x n |
|
| 68-79 |
As octets 56-67, next innermost step of processing |
| 80-nn |
Additional time range specifications, included in accordance with the value of n.
Contents as octets 56 to 67, repeated as necessary. |
| Notes: (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. (5) The reference time in section 1 and the forecast time together define the beginning of the overall time interval. (6) An increment of zero means that the statistical processing is the result of a continuous (or near-continuous) process, not the processing of a number of discrete samples. Examples of such continuous processes are the temperatures measured by analogue maximum and minimum thermometers or thermographs, and the rainfall measured by a rain gauge. |