I understand most of this. Thank you.
I wasn't seeing very aggressive watering reduction as the winter months arrived, due mostly I believed to ambient temperature and crop growing season parameters not being used for Iro2's calculation for 'Crop Evapotranspiration (-)' (while being mindful of how other factors, such as rainfall, can substantially influence the subject).
Your chart (thank you) shows this, with the exception of the last month. In this case, I just gave up, put the controller into manual mode, where it has remained for a while. It's also why I stopped posting the monthly summary commentaries.
IMO, given the update here, your algorithm for computing daily adjustments to 'Crop Evapotranspiration (-)' is not as aggressive as it could be toward putting down the least amount of water in a fully automated manner in winter months for the Dallas climate.
Parks and commercial entities are thus going to use more water in Winter months than they need to with your product. IMO.