morganluminate

I have this same problem. Did you ever figure out a solution?

I concur, I think that the diagram in PVsyst is incorrect or very hard to interpret. When you enter -30 to plus 30 the diagram shows this as the most rotation, whereas when you enter -60 to +60 the diagram shows this as the least rotation, however the results show something different, energy output is greater in the -60 to +60 case indicating that perhaps the inputs are correct and the diagram is wrong. Morgan