/usr/share/eccodes/definitions/grib1/0.eidb.table is in libeccodes-data 2.0.2-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | # identification of subcenters for eidb centre (Met Eireann)
0 dub Dublin
1 snn Shannon
255 miss Missing
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