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Table 4
Standard deviation of the differences, residual mean square, mean squared error, and coefficient of determination between the PCA-derived abundances of the training stars and those provided in previous works.
| [X/H] | nstars | σ | RMS | RMSE | R2 | |
|---|---|---|---|---|---|---|
| MSDL | Fe | 196 | 0.22 | 0.23 | 0.05 | –2.04 |
| RA12 | Fe | 38 | 0.19 | 0.19 | 0.04 | 0.42 |
| ON12 | Fe | 10 | 0.14 | 0.14 | 0.02 | 0.07 |
| NE13 | Fe | 100 | 0.19 | 0.24 | 0.06 | –0.16 |
| GA14 | Fe | 81 | 0.19 | 0.19 | 0.03 | 0.10 |
| NE14 | Fe | 21 | 0.22 | 0.22 | 0.05 | –0.12 |
| WW20 | Fe | 14 | 0.25 | 0.28 | 0.08 | –0.72 |
| SO20 | Fe | 9 | 0.14 | 0.15 | 0.02 | 0.72 |
| PA19-N | Fe | 84 | 0.28 | 0.36 | 0.13 | –1.17 |
| PA19-V | Fe | 85 | 0.23 | 0.24 | 0.06 | –1.31 |
| WW20 | Ti | 14 | 0.15 | 0.31 | 0.10 | –1.90 |
| SO20 | C | 9 | 0.14 | 0.19 | 0.04 | –0.15 |
| SO18 | 6 | 0.13 | 0.15 | 0.02 | –3.40 | |
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