Voigt profile fits to the DLA: Lyman-α transition on top, Lyman-β at lower panel. The fit to the data with its uncertainty is shown in the shaded area. Vertical dashed lines mark the position of the H i components used for the fit, determined both from the wings of Lyman-α and Lyman-β and the profile of higher Lyman transitions. The observational error is shown at the bottom for reference.