After running my first relay for a month at a RelayBandwidthRate of 200 KBytes/300KBytes burst, averaging 3-5 GiB per day, I upped it to 300KBytes/400 burst on the 22nd and reloaded the torrc.  I don't know why I am now pushing so much more through this simple middle relay. My flags have not changed:

Fast, HSDir, Running, Stable, V2Dir, Valid

Here is my daily vnstat:

     06/21/2017     1.83 GiB |    1.82 GiB |    3.65 GiB |  354.28 kbit/s

     06/22/2017     1.98 GiB |    1.98 GiB |    3.96 GiB |  384.34 kbit/s

     06/23/2017     1.68 GiB |    1.67 GiB |    3.34 GiB |  324.47 kbit/s

     06/24/2017     2.33 GiB |    2.33 GiB |    4.66 GiB |  452.47 kbit/s

     06/25/2017     4.00 GiB |    3.98 GiB |    7.98 GiB |  774.93 kbit/s

     06/26/2017     6.45 GiB |    6.38 GiB |   12.83 GiB |    1.65 Mbit/s

The number of  inbound connections has gone up as well, to sometimes 3500 from a normal of 700-800. 

I am now on track to do about 17 Gib today.  I expected to increase to maybe 6 or 7 GiB/day.   What perked things up?  The reload, or has the new bandwidth rate raised this realy above the average in some way?  Really asking because I'm nervous about the ISP noticing, but wonder if it will just increase to the total bandwidth limit 24/7 of 26GiB/day.  Hate to run it parttime to a size limit.

2nd question: Why do I have 1903 inbound, but only 132 outbound connections?  Shouldn't the extra connections disappear after 10 min or so of inactivity?   My flags all seem okay, and Tor would tell me if my relay was misconfigured, methinks, so this is just my not knowing enough, I hope.