Add middle-only line to Relays by relay flag graph
When looking at the declining number of tor relays [1] I also looked at the relays by relay flag graph. On that graph one can notice that guard relays are declining but exits are not, but middle relays (no guard or exit flag) are declining even more and are unfortunately not explicitly on that graph.
Could you add them?
[1] https://lists.torproject.org/pipermail/tor-relays/2017-October/013364.html