Surface areas connected to primary jet formation on 2015 April 12 12:12. (a) Rotated view, showing the intersection of the line of sight from Rosetta/OSIRIS (yellow) with the dust trajectories. (b) View along the line of sight with overlays of primary jets originating from different surface areas. (c) Dust column density corresponding to (b), with contributions of only primary jets connected to red regions in Figures 2(b) and (a), (b). (d) Dust column density with added contributions of all blue regions. (e) Dust column density with dust arising from illuminated surface areas.