T in K cross sect. at 216.5 nm 1500 2.22e-20 1600 3.06e-20 1700 4.05e-20 1800 5.19e-20 1900 6.46e-20 2000 7.84e-20 2100 9.33e-20 2200 1.09e-19 2300 1.26e-19 2400 1.42e-19 2500 1.60e-19 2600 1.77e-19 2700 1.95e-19 2800 2.13e-19 2900 2.30e-19 3000 2.47e-19 3100 2.64e-19 3200 2.80e-19 3300 2.96e-19 3400 3.11e-19 3500 3.26e-19 3600 3.40e-19 3700 3.54e-19 3800 3.67e-19 3900 3.79e-19 4000 3.90e-19 4100 4.01e-19 4200 4.11e-19 4300 4.21e-19 4400 4.29e-19 4000 3.90e-19 4500 4.37e-19