Important wavelengths recognized by PCA.
| Number | Important wavelengths (nm) |
|---|---|
| 19 | 1001, 1025, 1116, 1132, 1156, 1180, 1204, 1220, 1254, 1289, 1301, 1351, 1375, 1405, 1460, 1470, 1564, 1588, 1625 |
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