Figure 5
From: Correlated color temperature is not a suitable proxy for the biological potency of light
The number of composite SPDs retained at each of the nominal CCTs. The “Full” dataset includes SPDs with Duv ± 0.01; the “Filtered” dataset includes SPDs with the Duv tolerance of the ANSI Basic quadrangles. The other three series are color fidelity filters on the “Filtered” dataset. The nominal CCT with the most retained SPDs was 4000 K, with decreasing frequency at higher and lower CCTs.
