How do I write a template to calculate the average from recent, say last 2 hours, temperatures from a temperature sensor?

Configuration
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1

How do I write a template to calculate the average from recent, say last 2 hours, temperatures from a temperature sensor? I read some other posts and saw some samples. I played around with template section of this code in Developer Tools Template Editor without success:

  - platform: template
    sensors:
      mean_temperature:
        friendly_name: "Mean Temperature"
        unit_of_measurement: "°C"
        value_template: >
            {% set values = states.sensor.esp_2_object.attributes.data | default([]) %}
            {% if values %}
                {{ values | map(attribute='state') | map('float') | sum / values | length }}
            {% else %}
               0
            {% endif %}

In States, the sensor looks like this:

image
image868×280 16.5 KB

The sensor is the object temperature reading from a mlx90614 sensor via an ESP32.
Thanks!
Mark

2

Use this instead:

3

Thanks! Looks like that will do the job and I can quit banging my head on the desk :rofl: