The full spectrum exposures have been repeated by using other
two standard band-pass filters: WG 305 and WG 320. They cut all
the wavelengths below 300 and 315 nm respectively.
The UV output irradiance (in presence of theWG295 filter) has
been measured by an HD9021 calibrated radiometer (DeltaOhm
S.r.l.), equipped with two detector heads, one for UVB 280–
315 nm spectral region and another for UVA 315–400 nm one.