Ignore outlier values in climate history graph?

I have an Ecobee connected via HomeKit Controller. I believe that when there is some kind of blip in the network, or perhaps the connection of the Ecobee with one of the room sensors, the temperature reads something ridiculous… like -295C (below absolute zero!). These blips are making my history graphs illegible. Is there a way to filter them out or ignore them?

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You can create a template sensor to filter your values or use this sensor integration:

“Outlier” would be the one you want.