How can I reproduce history Thermostat graph?

How can I reproduce this graph (With the green-shaded area) on my homepage (Lovelace)?


I could already reproduct all the lines, but the Thermostat heating data comes out in another graph. Current lovelace config:

- title: Temperatures 24h
  entities:
    - sensor.dark_sky_temperature
    - sensor.radiator_temperature_living_room
    - sensor.radiator_temperature_set_living_room
    - sensor.radiator_operation_living_room
  type: history-graph

Current graph looks like:
image

I have also been trying to find the answer to this question.

I was able to do this by adding the climate entity for my thermostat. It adds the setpoint, the status, and the current temperature.

type: history-graph
entities:
  - entity: climate.t6_pro_z_wave_programmable_thermostat