Section 4 - Template 42 : Average, accumulation, and/or extreme values or other statistically processed values at a horizontal level or in a horizontal layer in a continuous or noncontinuous time interval for atmospheric chemical constituents
Templates for Section 4
- Template 0
- Template 1
- Template 2
- Template 3
- Template 4
- Template 5
- Template 6
- Template 7
- Template 8
- Template 9
- Template 10
- Template 11
- Template 12
- Template 13
- Template 14
- Template 20
- Template 30
- Template 31
- Template 254
- Template 1000
- Template 1001
- Template 1002
- Template 1100
- Template 1101
- Template 15
- Template 32
- Template 40
- Template 41
- Template 42
- Template 43
- Template 44
- Template 45
- Template 46
- Template 47
- Template 51
- Template 91
- Template 34
- Template 33
- Template 53
- Template 61
- Template 60
More Sections
| Octets | Key | Type | Content |
| 10 | Parameter category (see Code Table 4.1) | ||
| 11 | Parameter number (see Code Table 4.2) | ||
| 12-13 | Atmospheric chemical constituent type (see Code Table 4.230) | ||
| 14 | Type of generating process (see Code Table 4.3) | ||
| 15 | Background generating process identifier (defined by originating centre) | ||
| 16 | Analysis or forecast generating process identifier (defined by originating centre) | ||
| 17-18 | Hours after reference time of data cutoff (see Note 1) | ||
| 19 | Minutes after reference time of data cutoff | ||
| 20 | Indicator of unit of time range (see Code Table 4.4) | ||
| 21-24 | Forecast time in units defined by octet 20 (see Note 2) | ||
| 25 | Type of first fixed surface (see Code Table 4.5) | ||
| 26 | Scale factor of first fixed surface | ||
| 27-30 | Scaled value of first fixed surface | ||
| 31 | Type of second fixed surface (see Code Table 4.5) | ||
| 32 | Scale factor of second fixed surface | ||
| 33-36 | Scaled value of second fixed surface | ||
| 37-38 | Year | ||
| 39 | Month | ||
| 40 | Day | ||
| 41 | Hour | ||
| 42 | Minute | ||
| 43 | Second | ||
| 44 | n - Number of time range specifications describing the time intervals used to calculate the statistically processed field | ||
| 45-48 | Total number of data values missing in statistical process | ||
| 49-60 | Specification of the outermost (or only) time range over which statistical processing is done | ||
| 49 | Statistical process used to calculate the processed field from the field at each time increment during the time range (see Code Table 4.10) | ||
| 50 | Type of time increment between successive fields used in the statistical processing (see Code Table 4.11) | ||
| 51 | Indicator of unit of time for time range over which statistical processing is done (see Code Table 4.4) | ||
| 52-55 | Length of the time range over which statistical processing is done, in units defined by the previous octet | ||
| 56 | Indicator of unit of time for the increment between the successive fields used (see Code Table 4.4) | ||
| 57-60 | Time increment between successive fields, in units defined by the previous octet (see Notes 3 and 4) | ||
| 61-nn | These octets are included only if n>1, where nn = 48 + 12 * n | ||
| 61-72 | As octets 49 to 60, next innermost step of processing | ||
| 73-nn | Additional time range specifications, included in accordance with the value of n. Contents as octets 49 to 60, repeated as necessary. |
( 1) Hours greater than 65534 will be coded as 65534.
( 2) The reference time in section 1 and the forecast time together define the beginning of the overall time interval.
( 3) 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.
( 4) The reference and forecast times are successively set to their initial values plus or minus the increment, as defined by the type of time increment (one of octets 50, 62, 74 …). For all but the innermost (last) time range, the next inner range is then processed using these references and forecast times as the initial reference and forecast time.