Then you use the next generation weather sensor such as the Hunter Solar Sync. This adjust watering upwards in response to hot weather or down in cold weather, as well as providing rain shut down. I trust people inside of an irrigation controller if they understand ET and inches of water per week. Otherwise no. Someone talking to me about minutes turns me off just like asking how much spray concentrate per gallon.
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
Benjamin Franklin 1775
Sell not virtue to purchase wealth, nor Liberty to purchase power.
Benjamin Franklin Poor Richard's Almanac1738