Section - Template 4 : Derived forecasts based on a cluster of ensemble members over a circular area at a horizontal level or in a horizontal layer at a point in time

Octets Key Type Content
10 parameterCategory codetable Parameter category (see Code Table 4.1).
11 parameterNumber codetable Parameter number (see Code Table 4.2).
12 typeOfGeneratingProcess codetable Type of generating process (see Code Table 4.3)
13 backgroundProcess unsigned Background generating process identifier (defined by originating centre)
14 generatingProcessIdentifier unsigned Analysis or forecast generating processes identifier (defined by originating centre)
15-16 hoursAfterDataCutoff unsigned Hours of observational data cutoff after reference time (see Note 1)
17 minutesAfterDataCutoff unsigned Minutes of observational data cutoff after reference time
18 indicatorOfUnitOfTimeRange codetable Indicator of unit of time range (see Code Table 4.4)
19-22 forecastTime signed Forecast time in units defined by octet 18
23 typeOfFirstFixedSurface codetable Type of first fixed surface (see Code Table 4.5)
24 scaleFactorOfFirstFixedSurface signed Scale factor of first fixed surface
25-28 scaledValueOfFirstFixedSurface unsigned Scaled value of first fixed surface
29 typeOfSecondFixedSurface codetable Type of second fixed surface (see Code Table 4.5)
30 scaleFactorOfSecondFixedSurface signed Scale factor of second fixed surface
31-34 scaledValueOfSecondFixedSurface unsigned Scaled value of second fixed surface

( 1) Hours greater than 65534 will be coded as 65534.