Single graph to show when heating was called

Gibsop1

I have an interesting situation where according to my gas meter I'm using gas during the night, however there's no simple way to see which room is causing this to be triggered without looking at each graph in turn.

Can we have a single graph which shows when heating was called for each room please.

GrayDav4276

Have you checked to see if this has been requested before.....then add your vote to an already active thread.