/usr/lib/R/site-library/surveillance/extdata/ is in r-cran-surveillance 1.13.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/R/site-library/surveillance/extdata/counts_flu_BYBW.txt
/usr/lib/R/site-library/surveillance/extdata/h1_nrwrp.txt
/usr/lib/R/site-library/surveillance/extdata/k1.txt
/usr/lib/R/site-library/surveillance/extdata/m1.txt
/usr/lib/R/site-library/surveillance/extdata/m2.txt
/usr/lib/R/site-library/surveillance/extdata/m3.txt
/usr/lib/R/site-library/surveillance/extdata/m4.txt
/usr/lib/R/site-library/surveillance/extdata/m5.txt
/usr/lib/R/site-library/surveillance/extdata/n1.txt
/usr/lib/R/site-library/surveillance/extdata/n2.txt
/usr/lib/R/site-library/surveillance/extdata/neighbourhood_BYBW.txt
/usr/lib/R/site-library/surveillance/extdata/population_2001-12-31_BYBW.txt
/usr/lib/R/site-library/surveillance/extdata/q1_nrwh.txt
/usr/lib/R/site-library/surveillance/extdata/q2.txt
/usr/lib/R/site-library/surveillance/extdata/s1.txt
/usr/lib/R/site-library/surveillance/extdata/s2.txt
/usr/lib/R/site-library/surveillance/extdata/s3.txt
/usr/lib/R/site-library/surveillance/extdata/salmonella.agona.txt