I’m wondering what the optimum default columns are?
For example, does MID Metering need to be there?
I personally find much more value in seeing average outside temp for the past 30 days.
The same COP, but at different outside temps suggests one system is better than the other.
I thinking of these systems ‘down south’ with their warmer days. 
Sheffield seemed to kop for some really cold days across December, as you can see in the current chart.
I also think Flow Temp is a fundamental one. Goes hand in hand with a good COP?