An array of field values to be encoded in GRIB code or which have been
decoded. If there is a bitmap in the GRIB message, this array contains
missing data indicators at appropriate places. This array is accessible
through the GRIB_API Key "values".
The value used to indicate a missing value must be supplied
as a REAL value in PSEC3(2) (GRIB API key missingValue) or as an
INTEGER
value in KSEC3(2) (GRIB API Key missingValue).
Although declared as REAL in GRIBEX, PSEC4 can contain
INTEGER data. KSEC4(5) indicates whether
values are integer or real.
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