Irradiance of the surface area per device frequency or wavelength. The conditions spectral flux density or more confusingly "spectral intensity" are also utilised. Non-SI units of spectral irradiance incorporate Jansky = ten W⋅m⋅Hz and photo voltaic flux unit (1SFU = 10 W⋅m⋅Hz). of latest data are apparent in this https://greats631ltb9.hamachiwiki.com/user