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Specifies the data to be converted. Only the first field will be converted. Drop any icon containing or returning GRIB data. This may be, for example, a GRIB file, a MARS Retrieval (of observations) icon or a Macro which returns GRIB data.
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Specifies which of two Geopoints formats should be used for the output - either Traditional (6 columns including date, time and level) or XYV (just 3 columns - longitude, latitude and value). See Geopoints for details of these formats.
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