From: thomas.e.elam@gmail.com   
      
   Yes, that raw temp/kWh/day scatter plot showed a lot of randomness. But   
   as I tried to explain there were other variables that accounted for   
   apparent random scatter not explained by temperature. I just got around   
   to creating a scatter plot to show how that looks:   
      
   https://drive.google.com/file/d/1x5bPywVfOGnUdMoPhgFGM7rVXKNhBx9   
   /view?usp=sharing   
      
   As you layer in the home change variables in over time the pattern   
   emerges as a set lower and lower predicted kWh/day layers in the   
   predicted values. Thus the 97% R^2 for the final equation.   
      
   Notes: The windows were installed across 2 years. First the south side   
   and then north side of the house. The intercept shifter was 0.5 for the   
   first set and 1.0 for the second. Worked well.   
      
   There is no layer for days away from home. That remains as a random   
   shifter of predicted use.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)