I am using PVsyst V6.17 and I wonder which is the difference between using “Fixed Tilted Plane + Linear Shading” or “Unlimited sheds” regarding the shading effect. I have simulated the plant with this two options, by means of the same number of sheds, and I have obtained shading losses of 1.9% for the first option (“Fixed Tilted Plane + Linear Shading”) and losses of 2.3%for the second option (“Unlimited sheds”). I would like to know how the program manages to obtain these results. Thank you very much.