CLA, circadian light.	Eλ, light source spectral irradiance.
	Mcλ, melanopsin sensitivity (corrected for crystalline lens transmittance) (Wyszecki and Stiles, 1982).
k = 0.2616	Sλ, S-cone fundamental (Smith and Pokorny, 1975).
ab–y = 0.7	mpλ, macular pigment transmittance (Snodderly et al., 1984).
arod = 3.3	Vλ, photopic luminous efficiency function (Commission Internationale de l’Éclairage, 1994).
RodSat = 6.5Wm−2	$V_{\mathrm{\lambda }}^{\prime }$, scotopic luminous efficiency function (Commission Internationale de l’Éclairage, 1994).