Example PMJ from dataset B. Observations of (a) the SST Ca II 8542 Å line at an offset of −350 mÅ, (b) the IRIS SJI 2796, (c) the IRIS SJI 1400, and (d) the composite RGB image created from the three preceding images are shown. Tick-mark spacing is 1″. The images were cropped with the PMJ at their approximate centres. Symbols mark the sampling positions for analysis of spectral line profiles. Cross: Ca II 8542 Å, diamond: the Mg II k, h, and triplet lines, square: C II 1334 Å and 1335 Å lines, triangle: Si IV 1394 Å and 1403 Å lines. The slit positions (of one-pixel width) of IRIS are denoted in each panel by black-dotted lines. Tick marks are spaced 1″ apart.