OK, I understand all that, but here in the US we measure in CUFT on gas. I
would settle for a spreadsheet on that, but I would also like to superimpose
the Electricity bill on top of the gas bill. The reason for the btu output
was to compare the cost of heating my house with gas as to electricity. or at
least apples to apples. Maybe I just don't know enough about charts to do
this. so, just go back to CuFt and KWHrs. vs, money in a given month.