Defines the solar spectral irradiance spectral power distribution used in various plotting objects.
References
[1] | http://rredc.nrel.gov/solar/spectra/am1.5/ASTMG173/ASTMG173.html (Last accessed 23 August 2014) |
Extraterrestrial Radiation (solar spectrum at top of atmosphere) at mean Earth-Sun distance.
ASTM_G_173_ETR : SpectralPowerDistribution