New to this: How do I display the difference of two interpolated curves all on one graph?

Grafana Time Series Panel
1

Hi all
So sorry if this has been discussed before, didn’t manage to find an exact match in searches.
I am very new to this, and cant figure out how I display a line graph representing the difference (temperature, in degrees C) between two other temperature graphs.
I have:

  • A temp sensor in a shed
  • A temp sensor sourced from OpenWeatherMap

Both seem to be interpolated, ie different data points at different times.

thanks!

2

Welcome

Poease provide sample data of shed (meteic and value) and what is the datasource of shed temps?