T in K cross sect. at 231.4 nm 1920 1.07e-21 2120 2.05e-21 2320 3.50e-21 2520 5.50e-21 2720 8.09e-21 2920 1.13e-20 3120 1.51e-20 3320 1.95e-20 3520 2.44e-20 3720 2.99e-20 3920 3.58e-20