| Variable selection method | No. of variables | Characteristic wavelengths (nm) |
| RFA | 328 | 538, 456, 466, 510, 464, 548, 535, 525, 513, 458, 460, 529, 465, 905, 463, 519, 518, 527, 520, 526, 498, 522, 530, 515, 528, 1654, 1653, 461, 521, 1248, 524, 523, 508, 769, 455, 1367, 1655, 545, 517, 871, 1429, 509, 758, 825, 1428, 879, 547, 1432, 1215, 734, 475, 900, 495, 555, 536, 532, 1369, 895, 539, 747, 549, 1298, 552, 546, 540, 1376, 551, 1430, 593, 457, 859, 858, 1371, 1433, 813, 828, 925, 554, 1295, 756, 1427, 507, 733, 760, 862, 1294, 736, 543, 752, 909, 1375, 1368, 502, 762, 560, 1292, 904, 906, 558, 917, 499, 732, 1434, 1651, 1361, 902, 586, 869, 494, 1553, 504, 449, 972, 516, 888, 1378, 583, 469, 759, 503, 588, 533, 450, 896, 876, 563, 512, 908, 1297, 749, 459, 916, 541, 497, 913, 1550, 1296, 1370, 605, 584, 891, 531, 912, 1394, 1282, 462, 610, 1249, 570, 550, 907, 1406, 1396, 779, 578, 514, 557, 1379, 882, 511, 746, 860, 1372, 924, 569, 1374, 814, 829, 1307, 923, 1431, 1250, 500, 1548, 1397, 454, 534, 777, 1395, 1513, 1435, 1156, 1547, 1363, 1365, 1549, 362, 1321, 830, 1437, 897, 448, 585, 901, 764, 992, 792, 875, 809, 914, 915, 490, 1648, 435, 893, 964, 1647, 492, 377, 1384, 1343, 726, 1596, 741, 1318, 1649, 968, 1381, 1151, 1499, 967, 710, 1642, 892, 870, 778, 865, 739, 486, 955, 1645, 1597, 1290, 1602, 872, 971, 864, 445, 982, 1650, 472, 745, 1225, 911, 1546, 1511, 833, 899, 594, 470, 1205, 885, 974, 1239, 1323, 921, 918, 1617, 350, 919, 1505, 844, 1284, 1345, 1561, 748, 1300, 1209, 1552, 1545, 744, 849, 1612, 1634, 1226, 981, 1149, 654, 1256, 1551, 1402, 1508, 883, 451, 672, 1506, 1652, 774, 1637, 670, 831, 474, 1605, 763, 440, 878, 1353, 1216, 1644, 958, 773, 880, 447, 1299, 384, 1041, 650, 1537, 381, 1393, 1482, 1266, 704, 866, 423, 367, 1313, 785, 988, 1415, 653, 963, 1144, 943, 481, 1019, 1598, and 783. |
| VIP | 108 | 872, 1297, 1248, 1296, 860, 1298, 891, 875, 1295, 1403, 905, 859, 1404, 839, 861, 1402, 862, 1294, 883, 864, 847, 458, 1293, 1401, 871, 895, 741, 1644, 1645, 888, 1405, 853, 863, 1594, 825, 457, 1292, 1593, 1299, 460, 893, 1646, 461, 462, 1400, 1643, 455, 858, 1595, 769, 451, 464, 892, 909, 459, 1592, 1291, 456, 848, 813, 1647, 450, 449, 749, 908, 1290, 1399, 866, 844, 1591, 752, 833, 784, 1596, 851, 1289, 454, 822, 857, 964, 1648, 1551, 963, 947, 1642, 1552, 738, 1550, 1288, 840, 965, 771, 463, 1398, 465, 946, 760, 962, 1553, 1406, 843, 1287, 1590, 736, 466, 1649, 453, and 1549. |
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