The temperture is rising

I have just downloaded the data from my three recording thermometers and here is the chart. We have been working on insulation, etc, and now have the woodburner going. The indoor temperatures are pretty steady, and have been rising towards the target of 20C (68F), so things are going in the right direction. The boiler hardly comes on for heating now and I will report on the gas usage later on. One for the geeks!