I have two Tempest Weatherflow weather stations, in two different Homes, and the temperature data is merged. See image below.
How this issue occurs is called out in fakegato-history:
Note that if your Eve.app is controlling more than one accessory for each type, the serial number should be unique, otherwise Eve.app will merge the histories.
I have two Tempest Weatherflow weather stations, in two different Homes, and the temperature data is merged. See image below. How this issue occurs is called out in fakegato-history: