The gray line is the outside temp. You probably can’t see it very well but the dotted purple line is the thermostat target temp. the blocky graph at the bottom indicates when the heater is on (red) or the house fan is on (blue). The green vertical line denotes midnight.
A similar chart for the indoor humidity. I have a couple of humidifiers on smart outlets that I’ll probably add the blocky charts to like I do for the HVAC on the temp chart. I haven’t had a need to so far.
This was an experiment to see how I could use some light resistor diodes (the values are not Lux or any normalized unit). I don’t actually use this chart anymore but have been too lazy to remove it.
This shows my power usages. The green line is my kWh for the month. The yellow lines shows the kW usage at that time. I don’t really use this chart much either but it’s there.
I only really use and create the charts when I want to solve a problem or fine tune something. In the temperature and humidity case, I want to see the impact of certain activities and automations I have on the temp and humidity. In winter I care mostly about humidity because it’s so so dry here, in summer mostly about temperature because we don’t have an AC.