Local definition 50: Member State data

Octets Key Type Contents
41 localDefinitionNumber unsigned ECMWF local GRIB use definition identifier. 50 = Member state data
42 class codetable Class
43 type codetable Type
44-45 stream codetable Stream
46-49 experimentVersionNumber ksec1expver Version number or experiment identifier. (4 ASCII characters, right justified)
50 perturbationNumber unsigned Number: Ensemble forecast number. Control forecast is number 0, perturbed foecasts 1 - nn. Set to 0 if not ensemble forecast.
51 numberOfForecastsInEnsemble unsigned Total: Total number of forecasts in ensemble. This number includes the control forecast. Set to 0 if not ensemble forecast.
52 modelIdentifier unsigned Model identifier (in range 1 - 255)
53-56 latitudeOfNorthWestCornerOfArea signed Latitude of North-west corner of area (degrees*10^6)
57-60 longitudeOfNorthWestCornerOfArea signed Longitude of North-west corner of area (degrees*10^6)
61-64 latitudeOfSouthEastCornerOfArea signed Latitude of South-east corner of area (degrees*10^6)
65-68 longitudeOfSouthEastCornerOfArea signed Longitude of South-east corner of area (degrees*10^6)
69-116 Reserved for ECMWF additions
69 originalParameterNumber unsigned Original parameter number
70 originalParameterTableNumber unsigned Original parameter table number
71-116 Set to zero
117-300 optionalData ascii Optional data