This is one of those times Im glad I dont do a lot of calculations when it comes time to do installs.
i look outside and figure a windage coefficient, (looks like we could get alot of wind over there,not so much over here) Insulation coefficient (boy theys not much insulation in here) window /door coef. (gee windows and doors are new) ahh screw it ... what was the size of the one were replacing,lets add 30k to that
Now to answer the question
-7* outside on porch
weather rock moved 3' east overnight
68* up and down
Now if only FF hadnt run off all the sheep