Fig. 6
Probability density functions of the Hm corresponding to (a) AR sample of Tziotziou et al. (2013; red histogram), (b) MC linear-force free fittings at 1 AU using the data from the Lynch et al. (2003) and Lepping et al. (2006) studies (blue histogram), and (c) B1 AU corresponding to the best-fit αB from this work (green histogram).
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