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Table 1
Average magnetic field properties derived from SIR for umbra, elongated umbral core, penumbral sector PS, and the remainder of the penumbra for both the Si I and the Ca I spectral lines and for both GRIS scans.
| Features |  |
 |
γ ± σγ |
|---|---|---|---|
| [kG] | [kG] | [deg] | |
| Si I – Scan I | |||
| Umbra | 1.62 ± 0.23 | 0.61 ± 0.22 | 21.25 ± 8.38 |
| Elongated Umbra | 0.99 ± 0.12 | 0.48 ± 0.15 | 26.15 ± 8.85 |
| Penumbral Sector | 0.83 ± 0.24 | 0.57 ± 0.15 | 35.31 ± 10.30 |
| Penumbra | 0.59 ± 0.42 | 0.75 ± 0.22 | 56.80 ± 14.53 |
| Si I – Scan II | |||
| Umbra | 1.53 ± 0.20 | 0.65 ± 0.22 | 23.29 ± 8.60 |
| Elongated Umbra | 1.02 ± 0.10 | 0.48 ± 0.13 | 24.99 ± 6.62 |
| Penumbral Sector | 0.76 ± 0.24 | 0.55 ± 0.16 | 37.04 ± 11.50 |
| Penumbra | 0.61 ± 0.41 | 0.70 ± 0.21 | 54.50 ± 14.96 |
| Ca I – Scan I | |||
| Umbra | 1.94 ± 0.22 | 0.71 ± 0.27 | 20.20 ± 7.86 |
| Elongated Umbra | 1.30 ± 0.27 | 0.69 ± 0.27 | 27.80 ± 13.65 |
| Penumbral Sector | 0.94 ± 0.43 | 0.74 ± 0.22 | 40.81 ± 17.62 |
| Penumbra | 0.61 ± 0.50 | 1.05 ± 0.24 | 64.57 ± 16.38 |
| Ca I – Scan II | |||
| Umbra | 1.87 ± 0.22 | 0.78 ± 0.29 | 22.77 ± 9.17 |
| Elongated Umbra | 1.43 ± 0.20 | 0.75 ± 0.22 | 27.68 ± 9.89 |
| Penumbral Sector | 0.80 ± 0.40 | 0.83 ± 0.22 | 48.62 ± 17.41 |
| Penumbra | 0.63 ± 0.51 | 1.02 ± 0.24 | 63.16 ± 18.31 |
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