/usr/share/eccodes/definitions/grib3/grib2LocalSectionNumber.82.table is in libeccodes-data 2.6.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | 0 0 Empty local section
82 82 standard operational SMHI
83 83 MATCH data (standard operational SMHI + extra MATCH keywords)
255 255 MISSING
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