Fig. 10
Histograms of the tilt angles in the Schwabe data, analysed with two different methods. Light bars show the excess of tilt angles from our isotropic method searching for the optimum polarity division, while dark bars show the excess of tilt angles from the method by Howard (1991). Only groups with area weighted centres within ± 60° CMD and polarity separations Δβ> 3° are used.
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