T in K cross sect. at 447.8 nm 295 8.83e-19 300 8.57e-19 320 7.60e-19 340 6.77e-19 360 6.06e-19 380 5.45e-19 400 4.92e-19 420 4.47e-19 440 4.07e-19 460 3.73e-19 480 3.43e-19 500 3.17e-19 520 2.95e-19 540 2.75e-19 560 2.58e-19 580 2.43e-19 600 2.30e-19 620 2.18e-19 640 2.08e-19 660 2.00e-19 680 1.93e-19 700 1.87e-19 720 1.81e-19 740 1.77e-19 760 1.74e-19 780 1.72e-19 800 1.70e-19