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Fig. 8


Histograms of the magnetic field inclination angle in the entire penumbra except the outermost radial zone (shown in Fig. 7) at τc = 0.95 (full), 0.09 (dashed), and 0.01 (dotted). The distributions are bimodal, with peaks at approx. 45° and 80°. We define spines/intra-spines as having inclinations smaller/larger than 60°. The histograms have been smoothed over 3°.

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