section):

If the minimum temperature T_min is below T_base, there exist two variants:

* Variant A: Do not change . Only if , set . The resulting GDD is 0. This can be written more compactly as

* Variant B: Change to .

GDDs are typically measured from the winter low. Any temperature below T_base is set to T_base before calculating the average. Likewise, the maximum temperature is usually capped at 30 °C because most plants and insects do not grow any faster above

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