Here is picture of the computer screen showing moisture and Temperature readings at the 3 inch depth. The sensors also measure Salinity which we don't have to worry too much about.
Here the screen is tracking the daily history. You can see there are quite a bit of ups and downs. Temperatures fluctuate greatly from day to night and you can also tell when we irrigated.
As you can see there is a lot that goes into the decision as to what, where and how much water is applied. We are constantly monitoring and checking. Trying to keep the moisture levels in the "Goldilocks Zone" Not too wet and Not too Dry.