| Tree no. | Tree ring | Formulae to fill missing sapflow velosities | R2 |
| W 1 | 2018 | u = 7.5283 * VPD | 0.42 |
| W 1 | 2019 | u = 50.577 * VPD | 0.64 |
| W 1 | 2020 | u = 110.84 * VPD | 0.85 |
| W 2 | 2018 | u = 4.1501 * VPD | 0.35 |
| W 2 | 2019 | u = 47.415 * VPD | 0.72 |
| W 2 | 2020 | u = 85.951 * VPD | 0.74 |
| W 3 | 2018 | u = 3.6359 * VPD | 0.62 |
| W 3 | 2019 | u = 19.314 * VPD | 0.55 |
| W 3 | 2020 | u = 93.191 * VPD | 0.82 |