| NIR | Near-infrared |
| PLS | Partial least squares |
| AUC | Area Under Curve |
| MP | Micro PHAZIR RX |
| MN | Micro NIR 1700 |
| FN | FT-NIR |
| MD | Mahalanobis Distance |
| CCR | Cumulative Contribution Rate |
| PI | Performance Index |
| PCA | Principal Component Analysis |
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