T(K) cross sect. at 174 nm 800 3.25e-17 900 3.15e-17 1000 3.06e-17 1100 2.96e-17 1200 2.87e-17 1300 2.78e-17 1400 2.70e-17 1500 2.62e-17 1600 2.54e-17 1700 2.46e-17 1800 2.38e-17 1900 2.31e-17 2000 2.24e-17