Natheera Ravat

Hi Could you kindly clarify on the Climate Data for PV Sol. If I select South Africa, Cape Town, the Time Period says 1961-1990. However Meteonorms website says that historical data is available in hourly values from 2010 to present. What climate period is actually used and if it is for 1961-1990 how was this data found? Would the simulation results not be a bit distorted if we don't consider recent years due to global warming? Thank you