Wavelength(nm) n k 206.63 1.829 0.7084 215.62 1.871 0.689 225.42 1.914 0.6663 236.15 1.957 0.6383 247.96 2.001 0.6052 258.29 2.034 0.5723 269.52 2.066 0.5364 281.77 2.094 0.4948 295.19 2.119 0.4499 309.95 2.141 0.4006 326.26 2.157 0.3453 344.39 2.162 0.2872 364.65 2.16 0.2287 387.44 2.144 0.1706 413.27 2.116 0.1211 442.79 2.085 0.0837 476.85 2.053 0.0554 516.58 2.021 0.0353 563.55 1.994 0.0215 619.9 1.969 0.0118 688.78 1.948 0.0052 774.87 1.929 0.0015 885.57 1.913 0 999.84 1.87 0 2000 1.84 0