/usr/share/ncarg/data/nug/asc1.txt is in libncarg-data 6.4.0-9.
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 9 10 11 12 13 14 | 1965
1970
1971
1973
1978
1980
1982
1985
1990
2000
2001
2002
2005
2008
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