Fig. 9.

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Average size of magnetic (panel a) and bright (panel b) clusters for a given threshold in images from 1 March 2014 to 31 December 2014 (blue) and 1 January 2015 to 31 December 2015 (orange). Vertical lines show locations of maxima and minima. For years when the strong field cluster peak is flatter we show the point where the average cluster size flattens.
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