/usr/share/eccodes/definitions/metar/direction.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 5 6 7 8 | SE|South east|135
SW|South west|225
NW|North west|315
NE|North east|45
N|North|0
W|West|270
S|South|180
E|East|90
|