Wavelength(nm) n k 206.7 1.368 2.409 210.2 1.36 2.473 213.8 1.354 2.56 217.5 1.37 2.667 221.4 1.399 2.792 225.5 1.447 2.935 229.6 1.528 3.104 234 1.661 3.293 238.5 1.857 3.475 243.1 2.11 3.635 248 2.426 3.763 253.1 2.833 3.815 258.3 3.233 3.765 263.8 3.751 3.582 270 4.107 3.128 275.6 4.112 2.639 281.8 4.004 2.389 288.4 3.928 2.256 295.2 3.893 2.183 302.4 3.904 2.144 310 3.962 2.119 317.9 4.078 2.092 326.3 4.267 2.013 335.1 4.462 1.82 344.4 4.613 1.561 354.3 4.667 1.199 364.7 4.562 0.89 375.8 4.413 0.685 387.5 4.277 0.541 400 4.155 0.437 413.3 4.05 0.353 427.6 3.961 0.276 442.9 3.872 0.205 459.3 3.787 0.161 476.9 3.738 0.104 496 3.635 0.013 516.7 3.519 0.004 539.1 3.44 0.003 563.6 3.378 0 590.5 3.322 0 620 3.277 0 652.6 3.236 0 688.9 3.202 0 729.4 3.173 0 775 3.147 0 826.7 3.124 0 885.7 3.103 0 953.8 3.083 0 1033.3 3.065 0 1127.3 3.049 0 1240 3.035 0 1377.8 3.022 0 1550 3.012 0 1771.4 3.003 0 2066.7 2.995 0