Hello. Does anyone have a reference chart or guide to help their staff determine when to apply liquid and/or solid deice chemicals to runways? For example: If the forecast predicts freezing rain, and the temperature is (x), then apply liquid deice/anti-ice chemical (x) minutes prior to anticipated start of precipitation. Currently, we use Potassium Acetate (Liquid) and Sodium Formate (Solid), sometimes with sand. Thank you.