Combining entities

Hi, I’m using grafana and influxdb to monitor and output the temperature from my house. Yesterday I’ve changed my entity Id name from hassio, so that I can identify it better.

I’ve been collecting data since the modification under the initial entity id ex: temperature_1234456789, the new entity id is something like temperature_living_room.

what is the right procedure in order to get an continues graphic from this 2 ?

Thank you.