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Fig. 11.

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Histograms of mean relative flare-related changes to the (a) free magnetic energy (ηEF) and (b) total helicity (ηHV) for the sample Smajor. Numbers in brackets indicate the ratio of confined to eruptive flares within the tested sample. Flares for which a helicity reversal is detected are excluded. Blue and red color indicates confined and eruptive flare type, respectively.

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