Using PSM in PVSyst


I'm struggling with getting consistent, reliable results when trying to use the PSM datasets, both v2 and v3, in PVSyst. I've been contributing to the PVSyst thread here:

Can anyone at NSRDB help understand why I may be seeing such variability in time definition & global horizontal irradiance? Thanks!

By the way, it would be great if this forum had a search function.