/usr/share/doc/libmusic-dev/examples/spikes1.dat is in libmusic-dev 1.0.7-4.
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 | # spikes
0.0 9
0.1 0
0.2 1
0.3 2
0.4 3
0.5 4
0.6 5
0.7 6
0.8 7
0.9 8
|