[justa-hairyape]

Don't know what you linked there, but I do not download files from links like that. Can you point to a web page ? Again, as I explained. The visible light metric is a poor metric to use to analyze solar activity variations. Real simple. Dark area cancel light area. Got it ?

[dr_who]

It’s a link to an ASCII text file on a government website giving irradiance values for the sun from 1979-2003. Haven’t cought a virus from an ASCII text file yet but would change my browser and OS shortly afterwards if I did.