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. 2003 Feb 10;100(4):2140–2145. doi: 10.1073/pnas.0437826100

Figure 1.

Figure 1

Spectra of experimental and natural light. The spectra of experimental light (Cool White, Blue, Red, FR) and direct sunlight (Sun, University of California, Los Angeles campus on June 10, 2000, at 15:30 PST) are shown as the relative spectral irradiance in the wavelength range of 300–900 nm.