Afterglow spectrum op GRB 130606A, starting from Lyα. The absorption lines are indicated with the ion that produces them and the rest wavelength. We use different colours for the various absorbers (see Sect. 3.5), as indicated in the legend; z = 5.9127 in red is the signature of the host galaxy. The error spectrum is shown in purple, the orange spectrum is the scaled atmospheric transmission spectrum. The spectrum continues in Fig. A.1.