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* = 274.64 nm:

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

0  -48.3611     0.0001877
1  -0.1595      7.252×10^-6
2  -1.026×10^-4     2.917×10^-7
3  -1.334×10^-5   -1.725×10^-9
4   1.458×10^-7      -2.675×10^-11