Chill Hours
The chill hours modified model specifies that the number of hours between 32 and 45 degrees Fahrenheit (0°C to 7.2°C), accumulate as chill hours.
Formula
CHt = ∑ T7.2, with T7.2 = { 0°C < T < 7.2°C: 1, else: 0. }
METER Sensors that support chill hours:
Chill Hours
- Click the environmental model icon.
- Select Modified Chill Hours.
- Enter a name for the model and a name for the chart.
- The Maximum and Minimum temperature ranges will auto-populate with 7.2 °C and 0 °C.
- A default air temperature measurement will be selected. Select a different measurement if desired.
- Optional: Enter the target accumulated chill hours for the crop type.
- Click Create.
![](https://files.helpdocs.io/la7ra8dc1e/articles/re1zl2nju7/1640984011345/chill-final.gif)
Accumulated Chill Hours
- Click the Vertical Ellipse icon.
- Select Stats.
- Toggle the desired measurements.
- Click Accept.
![](https://files.helpdocs.io/la7ra8dc1e/articles/c81jjsuxnt/1636675233073/ezgif-com-gif-maker.gif)