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Hi everyone, I have a question about the meteo data I should use for estimating production in US. I'm currently using the build-in NREL API and I believe that pulls PSM3 data from NREL/NSRDB. I'm just wondering what is the difference between the PSM3 data and the TMY3 data collected from actual ground stations and which one is more acurate/reliable? Thanks,

Hey everyone, quick question. Is possible/reasonable to get a P99 hourly data from the 8760 file? If so, what is the formula? Thanks！