The scale on temperature graph needs improvement
I find the per room temperature graph with heating and humidity overlays very useful (though I am not sure what the purpose of the sunshine overlay is?). However, the graph would be much easier to read if the temperature scale at the left hand edge was improved. The fine horizontal lines across the chart should be displayed at 1 or 2 degree increments (when in Celsius mode) depending on the overall range covered by the graph. A few more labels would also be beneficial (though not necessarily for every 1 degree increment).