Zoom of the plage region indicated in Fig. 3 by a square. The top two panels show the Hi-C image (150 × 150 pixel) and the AIA image (26 × 26 pixel) in that 15′′ × 15′′ region. The individual pixels are clearly identifiable in the AIA image. The bottom panel shows the variation in the count rate across the structures along the diagonal indicated by the dashed lines in the top panels. The pixels for the AIA data are indicated by diamonds. The bars indicate the individual pixels of Hi-C, the height of the bars represent the errors. For better comparison the AIA count rate is scaled by the factor given in the plot. The arrows in panels a) and c) indicate the position of a miniature coronal loop. See Sect. 3.1