FIGURE 1.
Ultraviolet (UV) daylight spectrum (with filter WG320) used for exposures representing the spectral irradiance (in mW/cm2) for each nanometer (nm)—The obtained spectrum started after 310nm and finished around 460nm. It contains a portion of UVB, the entire UVA, plus a portion of visible light with a ratio UVA/UVB close to 25.