Fig. 3.
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Aligned Ca II and Mg II observations. Ca II line core images for (a) sets A and (b) B, and Mg II k line core images also for (c) sets A and (d) B. The brightness of each image has been scaled independently. The red star in panel (a) marks the location of the representative pixel used in Fig. 6, while the green star marks the location of the pixel used in Fig. 4.
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