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This is because the definition of the parameter 201 contains the key "typeOfStatisticalProcessing". Check the GRIB2 representation of this parameter in the Parameter database.
A value of 2 means "Maximum". See the code table for this key here.
This means that this parameter requires a Product Definition Template for interval-based products (not instantaneous). See here.
So we need to select the correct Product Definition Template number:
| Code Block |
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% grib_set -s edition=2,productDefinitionTemplateNumber=8 mx2t.grib1 mx2t.grib2 % grib_ls -p paramId,shortName mx2t.grib2 paramId shortName 201 mx2t |
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