GRIB2 - GRID TEMPLATE 4.1101
Hovmo ller-type grid with averaging or other
statistical processing
Created 09/07/2005
Preliminary note: This template is simply experimental, was not validated at the time of publication
and should be used only for bilateral previously-agreed tests. (Octets 35-50 are
very similar to octets 43-58 of product definition template 4.8, but the meaning
of some fields differs slightly)

Octet | Contents
--- | ---
10 | Parameter category (see Code Table 4.1)
11 | Parameter number (see Code Table 4.2)
12 | Type of generating process (see Code Table 4.3)
13 | Background generating process identifier (defined by originating centre)
14 | Analysis or forecast generating process identifier (defined by originating centre)
15-16 | Hours of observational data cutoff after reference time (see Note 1)
17 | Minutes of observational data cutoff after reference time
18 | Indicator of unit of time range (see Code Table 4.4)
19-22 | Forecast time in units defined by octet 18 (see Note 2)
23 | Type of first fixed surface (see Code Table 4.5)
24 | Scale factor of first fixed surface
25-28 | Scaled value of first fixed surface
29 | Type of second fixed surface (see Code Table 4.5)
30 | Scale factor of second fixed surface
31-34 | Scaled value of second fixed surface
35-38 | Total number of data values missing in the statistical process
39 | Statistical process used to calculate the processed field from the field at each time increment during the time range (see Code Table 4.10)
40 | Type of time increment between successive fields used in the statistical processing (see Code Table 4.11)
41 | Indicator of unit of time for time range over which processing is dome (see Code Table 4.4)
42-45 | Length of the time range over which statistical processing is done, in units defined by the previous octet
46 | Indicator of unit of time for increment between the successive fields used (see Code Table 4.4)
47-50 | Time increment between successive fields, in units defined by the previous octet (see Note 3)

Note : (1) Hours greater than 65534 will be coded as 65534. (2) Reference = reference time (section 1) + forecast range (PDT) + offset and increments from reference time (GDT). (3) An increment of zero means that the statistical processing is the result of a continuous (or new continuous) process, not the processing of of a number of discrete samples. Examples of such continuous processes are the temperatures measured by a analogue maximum and minimum thermometers or thermographs and the rainfall measured by a rain gauge.

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