They are covered from rain because of a small overhanging eve, and further a patio cover made out of a semi transparent and diffusing material. So yes, they never get rained on, and, technically, no direct sunlight (its “filtered” by the cover), but they get plenty of light and are also subject to the outside temperatures. There is plenty material there to compute an ET and use that for watering purposes (perhaps after some fine tuning of the advanced parameters), but still need there to be no reaction for forecasted, or observed (private weather station) rain.
