This example represents a 6-hour minimum of a field valid on 20120103 00Z produced by a forecast started on 20120101 00Z . In this example, the minimum is the 6-hourly minimum in the time interval: steps 42 to 48.
- In bold, the values are fixed. They are meant to be used by all partners
- In green, these are the values for the example.
| Time (Minimum over the last 6 hours ) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Start of re-forecast ( section 1 ) | ||||||||
Octets reforecast | Octets real time | Fixed values to be used by all the partners | Example | Meaning of values | Grib_api keys | |||
| 12 | 12 | 12 | Significance of Reference Time | =1 | Start of forecast | = 1 | ||
| 13-14 | 13-14 | Year (four digits) | 2012 | year of start of forecast |
dataDate= | 201220120101 | 15dataTime=0 | |
| 15 | Month | 01 | month of start of forecast | = 01 | ||||
| 16 | 16 | Day | 01 | day of start of forecast | = 01||||
| 17 | 17 | Hour | 00 | hour of start of forecast | = 00 | |||
| Minimum ( section 4 e.g. Template 4.11) | ||||||||
| 18 | 18 | Indicator of unit of time range | = 11 | Hour | = 1 | |||
| 19-22 | 19-22 | Forecast time | =42 | Step at the beginning of the 6-hourly interval | startStep=42 | |||
| 45-4638-39 | year of end of overall time interval | 2012 |
End of minimum period |
endStep= | 201248 | |||
| 47 | 40 | month of end of overall time interval | 01 | = 01 | ||||
| 48 | 41 | day of end of overall time interval | 03 | = 03 | ||||
| 49 | 42 | hour of end of overall time interval | = | 00 | ||||
| 52 | 45 | number of time ranges | = 11 | Only one time statistics applied (minimum) | = 1 | |||
| 53-5646-49 | total number of data values missing in statistical process | = 00 | = 0 | |||||
| 5750 | Statistical process used to calculate the processed field from the field at each time increment during the time range | = 33 | Minimum | stepType= 3min | ||||
| 58 | 51 | Type of time increment between successive fields used in the statistical processing | = 2 | Successive times processed have same start time of forecast, forecast time is incremented | = 2 | |||
| 59 | 52 | Indicator of unit of time for time range over which statistical processing is done | = 11 | Hour | indicatorOfUnitForTimeRange=1 | |||
| 60-63 | 53-56 | Length of the time range over which statistical processing is done, in units defined by the previous octet | = 66 | 6-hourly maximumminimum | lengthOfTimeRange=6 | |||
| 64 | 57 | Indicator of unit of time for the increment between the successive fields used | = 11 | Hour | indicatorOfUnitForTimeIncrement=1 | |||
| 65-68 | 58-61 | Time increment between successive fields, in units defined by the previous octet | = 00 | Minimum computed continuously in the 6 hourly interval | timeIncrement=0 | |||
Examples of grib2 headers: