I´ve made a query from my heat-meter, every day at 0:00 its written in influxdb:
Is it possible to build the difference of each day and month, and write it in influxdb / show in a graph ?
29.01.2021 = 27.4222MWh
28.01.2021 = 27.4000MWh
→ 422,2kWh at 28th Jan.
and this per month ?
I don´t know how to calculate in grafana.