X-shooter spectrum of GRB 120422A’s afterglow obtained 0.716 days after the burst. The top panel shows the combined UVB- and VIS-arm spectrum from 3150 to 10 000 Å. The absolute flux-calibrated spectrum is corrected for heliocentric motion and Galactic reddening. The spectral data are shown in black, and the corresponding noise level in grey. For illustrative purposes, we rebinned the spectrum to 2 Å bins. The positions of absorption lines that are typically associated with GRB absorbers are indicated by red lines (dotted if detected and dashed if a feature evaded detection). Nebular lines are shown in blue. The panels below zoom-in on each absorption and emission line (wavelength binning 0.15 Å). Table 4 summarises the fluxes and equivalent widths for each line. Regions that are heavily affected by atmospheric absorption (transparency: <20%) are indicated by the grey shaded areas.