/usr/share/colplot/plotfiles/ is in colplot 5.0.1-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/colplot/plotfiles/client-20061010.cpu
/usr/share/colplot/plotfiles/client-20061010.dsk
/usr/share/colplot/plotfiles/client-20061010.net
/usr/share/colplot/plotfiles/client-20061010.tab
/usr/share/colplot/plotfiles/hadesn2-20081204.env
/usr/share/colplot/plotfiles/hadesn2-20081204.tab
/usr/share/colplot/plotfiles/ibdln269-20070125.cpu
/usr/share/colplot/plotfiles/ibdln269-20070125.dsk
/usr/share/colplot/plotfiles/ibdln269-20070125.net
/usr/share/colplot/plotfiles/ibdln269-20070125.tab
/usr/share/colplot/plotfiles/server-20061010.cpu
/usr/share/colplot/plotfiles/server-20061010.dsk
/usr/share/colplot/plotfiles/server-20061010.net
/usr/share/colplot/plotfiles/server-20061010.tab