I’m only using WebCore to automate the pool pump.
Ipstas did all the brainwork here: Release: Data storage, Energy/Temp/Humidity Graphs and energy optimization back to you
Set up a free account at w https://www.hundredgraphs.com
Once your account is set up you can obtain an API key from hundredgraphs.
Install Ipstas ST app linked above and use it to choose sensors and properties that you’d like to feed hundredgraphs. Once that is done, and the API is entered into the app, you can go back to hundredgraphs and have graphs running in a few minutes using the feeds that you’re piping to the website 
I’ve set mine to public so other’s can check in on our heating efficiency.