Sums of GP as a proxy for season length

One use of the growth potential is to sum the GP when it is scaled from 0 to 1. When the GP is 1 for a day, that day has temperatures at an optimum for growth. A sum of days then gives some idea of how optimum a period of time would be. For example, a week with a GP sum of 5 would have the equivalent of 5 perfect growing temperature days, or 5/7 = 71% of what the…