X axis (cm^-1) Real Index (n) 200 1.578 204 1.579 208 1.58 212 1.581 216 1.582 220 1.583 224 1.584 228 1.586 232 1.587 236 1.588 240 1.589 244 1.591 248 1.592 252 1.593 256 1.595 260 1.596 264 1.598 268 1.599 272 1.601 276 1.603 280 1.604 284 1.606 288 1.608 292 1.61 296 1.612 300 1.614 304 1.616 308 1.618 312 1.62 316 1.622 320 1.625 324 1.627 328 1.63 332 1.633 336 1.635 340 1.638 344 1.641 348 1.645 352 1.648 356 1.652 360 1.656 364 1.66 368 1.664 372 1.669 376 1.674 380 1.68 384 1.686 388 1.692 392 1.699 396 1.707 400 1.715 404 1.725 408 1.735 412 1.747 416 1.76 420 1.775 424 1.791 428 1.809 432 1.83 436 1.854 440 1.88 444 1.909 448 1.939 452 1.968 456 1.989 460 1.991 464 1.956 468 1.863 472 1.71 476 1.527 480 1.355 484 1.221 488 1.131 492 1.079 496 1.055 500 1.05 504 1.057 508 1.07 512 1.086 516 1.102 520 1.118 524 1.134 528 1.147 532 1.16 536 1.172 540 1.182 544 1.191 548 1.2 552 1.208 556 1.215 560 1.221 564 1.227 568 1.233 572 1.238 576 1.243 580 1.247 584 1.251 588 1.255 592 1.259 596 1.263 600 1.266 604 1.27 608 1.273 612 1.276 616 1.279 620 1.282 624 1.285 628 1.288 632 1.291 636 1.294 640 1.297 644 1.3 648 1.303 652 1.306 656 1.309 660 1.312 664 1.315 668 1.318 672 1.321 676 1.324 680 1.327 684 1.331 688 1.334 692 1.337 696 1.34 700 1.344 704 1.347 708 1.351 712 1.354 716 1.358 720 1.362 724 1.366 728 1.37 732 1.374 736 1.378 740 1.382 744 1.386 748 1.39 752 1.394 756 1.398 760 1.402 764 1.406 768 1.409 772 1.411 776 1.413 780 1.413 784 1.411 788 1.408 792 1.402 796 1.394 800 1.385 804 1.376 808 1.367 812 1.36 816 1.355 820 1.352 824 1.35 828 1.351 832 1.353 836 1.355 840 1.359 844 1.363 848 1.368 852 1.373 856 1.378 860 1.383 864 1.388 868 1.393 872 1.399 876 1.404 880 1.41 884 1.415 888 1.421 892 1.426 896 1.432 900 1.437 904 1.443 908 1.449 912 1.455 916 1.461 920 1.467 924 1.473 928 1.48 932 1.487 936 1.493 940 1.5 944 1.507 948 1.515 952 1.522 956 1.53 960 1.538 964 1.547 968 1.556 972 1.565 976 1.574 980 1.584 984 1.594 988 1.605 992 1.617 996 1.628 1000 1.641 1004 1.654 1008 1.668 1012 1.682 1016 1.698 1020 1.714 1024 1.731 1028 1.749 1032 1.768 1036 1.789 1040 1.81 1044 1.833 1048 1.857 1052 1.882 1056 1.907 1060 1.933 1064 1.959 1068 1.983 1072 2.004 1076 2.02 1080 2.027 1084 2.02 1088 1.995 1092 1.947 1096 1.874 1100 1.778 1104 1.665 1108 1.544 1112 1.425 1116 1.317 1120 1.224 1124 1.148 1128 1.09 1132 1.048 1136 1.02 1140 1.003 1144 0.9943 1148 0.9903 1152 0.9878 1156 0.9841 1160 0.9777 1164 0.9683 1168 0.9569 1172 0.9455 1176 0.936 1180 0.9296 1184 0.9264 1188 0.9251 1192 0.9234 1196 0.9184 1200 0.9081 1204 0.8925 1208 0.8739 1212 0.8558 1216 0.8415 1220 0.832 1224 0.8249 1228 0.8149 1232 0.7965 1236 0.7679 1240 0.7341 1244 0.7038 1248 0.6832 1252 0.6743 1256 0.6756 1260 0.6844 1264 0.698 1268 0.7141 1272 0.7313 1276 0.7486 1280 0.7656 1284 0.7819 1288 0.7975 1292 0.8122 1296 0.8261 1300 0.8392 1304 0.8516 1308 0.8633 1312 0.8743 1316 0.8847 1320 0.8946 1324 0.904 1328 0.9128 1332 0.9213 1336 0.9293 1340 0.937 1344 0.9443 1348 0.9512 1352 0.9579 1356 0.9643 1360 0.9704 1364 0.9763 1368 0.982 1372 0.9874 1376 0.9926 1380 0.9976 1384 1.002 1388 1.007 1392 1.012 1396 1.016 1400 1.02 1404 1.024 1408 1.028 1412 1.032 1416 1.036 1420 1.039 1424 1.043 1428 1.046 1432 1.049 1436 1.053 1440 1.056 1444 1.059 1448 1.062 1452 1.064 1456 1.067 1460 1.07 1464 1.072 1468 1.075 1472 1.077 1476 1.08 1480 1.082 1484 1.085 1488 1.087 1492 1.089 1496 1.091 1500 1.093 1504 1.095 1508 1.097 1512 1.099 1516 1.101 1520 1.103 1524 1.105 1528 1.107 1532 1.109 1536 1.11 1540 1.112 1544 1.114 1548 1.115 1552 1.117 1556 1.118 1560 1.12 1564 1.121 1568 1.123 1572 1.124 1576 1.126 1580 1.127 1584 1.129 1588 1.13 1592 1.131 1596 1.133 1600 1.134 1604 1.135 1608 1.136 1612 1.138 1616 1.139 1620 1.14 1624 1.141 1628 1.142 1632 1.143 1636 1.144 1640 1.145 1644 1.147 1648 1.148 1652 1.149 1656 1.15 1660 1.151 1664 1.152 1668 1.153 1672 1.153 1676 1.154 1680 1.155 1684 1.156 1688 1.157 1692 1.158 1696 1.159 1700 1.16 1704 1.161 1708 1.161 1712 1.162 1716 1.163 1720 1.164 1724 1.165 1728 1.165 1732 1.166 1736 1.167 1740 1.168 1744 1.168 1748 1.169 1752 1.17 1756 1.171 1760 1.171 1764 1.172 1768 1.173 1772 1.173 1776 1.174 1780 1.175 1784 1.175 1788 1.176 1792 1.177 1796 1.177 1800 1.178 1804 1.178 1808 1.179 1812 1.18 1816 1.18 1820 1.181 1824 1.181 1828 1.182 1832 1.183 1836 1.183 1840 1.184 1844 1.184 1848 1.185 1852 1.185 1856 1.186 1860 1.186 1864 1.187 1868 1.187 1872 1.188 1876 1.188 1880 1.189 1884 1.189 1888 1.19 1892 1.19 1896 1.191 1900 1.191 1904 1.192 1908 1.192 1912 1.193 1916 1.193 1920 1.193 1924 1.194 1928 1.194 1932 1.195 1936 1.195 1940 1.196 1944 1.196 1948 1.196 1952 1.197 1956 1.197 1960 1.198 1964 1.198 1968 1.198 1972 1.199 1976 1.199 1980 1.2 1984 1.2 1988 1.2 1992 1.201 1996 1.201 2000 1.201