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Table B.1.
Conversion relations between the PG16S metallicity calibration (x) and the other calibrations (y) used in this work.
| Calibration | Relation | x-range | Inverserelation | y-range | nreg |
|---|---|---|---|---|---|
| PG16R | y = −0.4225x3 + 10.43x2 − 84.68x + 234 | 7.8–8.7 | x = 2.779y3 − 68.82y2 + 568.7y − 1560 | 7.8–8.7 | 2511 |
| N2 | y = −0.2211x3 + 6.022x2 − 53.24x + 161.9 | 7.7–8.7 | x = −0.8761y3 + 21.85y2 − 180.6y + 502.3 | 8.1–8.9 | 8862 |
| O3N2 | y = −1.035x3 + 25.97x2 − 216x + 603.9 | 7.9–8.7 | x = −0.9794y3 + 24.82y2 − 208.6y + 589.9 | 8.1–8.9 | 8862 |
| IZI | y = 0.5952x3 − 12.71x2 + 88.96x − 194.6 | 8.1–8.6 | x = −2.577y3 + 64.51y2 − 536.7y + 1492 | 7.9–8.6 | 8051 |
| KK04 | y = −0.6234x3 − 15.89x2 + 133.7x − 380.1 | 8.1–8.6 | x = −0.1063y3 + 2.987y2 − 27.4y + 90.54 | 7.9–8.6 | 2641 |
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