Data at 5-nm intervals as given in the "Supporting Information" published along with the online version of the paper

Parameterization of the temperature dependence:

ln (σ(λ,T)) = ∑_i A_i (λ-λ*)ⁱ × [1 + (296 – T) ∑_i B_i (λ-λ*)ⁱ]

with the following parameters A_i and B_i and λ* = 287.861 nm:

-----------------------------------------------------
i    A_i        B_i
-----------------------------------------------------

0  -47.4178     0.0003173
1  -0.1567273    1.2323×10^-5
2  -2.624376×10^-4  2.68×10^-8
3  -6.78412×10^-6   -5.28×10^-9
4   1.261478×10^-7     6.99×10^-11