T(K) cross sect. error limit at 216.65 nm 806 4.82e-20 947 6.85e-20 952 6.83e-20 1082 8.23e-20 1.50e-20 1477 1.99e-19 1802 3.55e-19 1814 3.60e-19 2124 5.08e-19