T in K cross sect. at 95% confidence limit 216.36 nm 298 4.01e-17 2.60e-18 298 4.09e-17 1.10e-18 301 4.12e-17 2.40e-18 350 3.92e-17 2.50e-18 405 3.46e-17 2.20e-18 472 3.16e-17 2.40e-18 537 2.67e-17 1.40e-18