This is just to track the effectiveness and cost of heating the yurt with a DeLonghi Dragon 3 oil filled radiator (Chinese made, bit shonky).
Looking good so far, I would have spent £9 on coal over a similar weekend and is far less controllable.
Average external temp 11c.
Average internal Temp 20c.
Entire weekend heating cost @ 10p per kwh, £3.
External humidity 96%
Internal humidity 52%
Things may well change as the temperature drops below zero. Time will tell.