Hi, While generating a new site file and meteo file, the monthly temperature value taken by Metenom 7.2 is much lower than the real time temperature. I have used a site at Trichy, Tamilnadu, India where the real time average temperature is 33.5°C whereas Meteonom 7.2 gives a temperature of 27°C. Do we have to change the temperature according to real time manually or does PVsyst account for it during simulation?