Fig. 6
Comparison between the field inclination (red and blue diamonds) reconstructed by the cut-off frequency and the values obtained by potential field extrapolation (grey and green asterisks) in the 1700 Å a); 1600 Å b); and 340 Å c) bandpasses. The dashed lines show the umbra-penumbra boundary. The cross-hatched region indicates less-reliable measurements.
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