First three panels: same images shown in the second column of Fig. 5. Right-most panel: count rate profiles along a N–S cut in both Metis channels. The blue and red profiles, each normalised to their peak value, refer to the Ly-α and pB images, respectively. The grey profile shows the ratio of the two channels along the same cut. The horizontal dashed lines represent fiducials added to aid the identification of features seen in images with those seen in the count rate profiles.