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. 2013 Dec 19;8:87–104. doi: 10.2147/OPTH.S46189

Figure 6.

Figure 6

Es(λ) is the spectral distribution of solar radiation (ambient exposure) in W/m2/nm (orange line). S(λ) is the relative spectral function efficiency (UV-B more dangerous than UV-A) in arbitrary units (blue line).

Abbreviations: UV, ultraviolet; UV-B, mid ultraviolet 280–320 nm; UV-A, near ultraviolet 320–380 nm