jdelapena

Good afternoon When I create a geographical site I only put as inputs "Horizontal global irradiation" and "Average Ext. Temperature". If I had "Horizontal diffuse irradiation" from a data base, should I put it as input too? I would like to know how PVsyst generate "Horizontal diffuse irradiation". I thought that "Horizontal global irradiation include" included diffuse irradiation, is it correct? Thank you