Although range data from 100% to 20% or even to some other low percentage is ideal It is possible to work with other data. So for your trips, if you record your daily commute for example, I would log it asI've been watching this thread for a while, but until I get a proper evse installed I can't really contribute much data, (on the granny lead at 1.7 KW charging takes a while!)
I can provide some input though, gom on the Kona64 is very good, on a long run starting of with about 60% I covered over 100 miles mainly M1 and A1M and arrived at Harrogate civic centre rapid with remaining range within 5 miles that estimated before I left.
On a more usual basis most days I leave with 79% having pre-heated travel 35 miles to work and 35 miles home, after which I have 58-60% remaining, so extrapolated range very similar to that of thetx. If you want a chunk of 35 miles for approximately 10% trips though I could probably log 10 a week for you.