Nominal line core intensity map of Fe I 6302 Å (panel a), Ca II 8542 Å (panel b), Hα (panel c), and Ca II K (panel d) and blue wings intensity of Hα (panel e) and Ca II K (panel f) at Δλ = −0.6 Å and Δλ = −0.34 Å, respectively. The images are spatially and temporally co-aligned according to the CHROMIS field of view. The black dotted curve identifies the bright network. The white rectangle in panel b corresponds to the one shown in Fig. 3b while the rectangle in panel d highlights the region shown by Fig. 9. The red arrow indicates the north and the green arrow the disk centre. The temporal evolution is shown in a movie in the online edition.