Unable to use real world data because diffuse fraction of 12.1% is “irrealistic”

[Mikaila]

I have imported ASCII meteo file with one year of measured data for the global irradiation, diffuse irradiation, ambient temperature and wind speed for a site in the Central Australian Desert. The meteo file was successfully created but when I try to use it in a project it tells me that “The diffuse fraction of 12.1% in August is an irrealistic value” and so it will not let me use the file.

It is actual measured data and other months have diffuse fractions as low as 13.3%, so why does PVsyst not accept 12.1%?

Is it still possible to use this data?

[André Mermoud]

In the Hidden parameters, topic "Miscellaneous", you can adjust this limit.