Fit to metal absorption lines. The observed data are shown in black with the synthetic profile for each given species overplotted in red. In case of several lines contributing to the observed profile (see e.g., S IIλ1259 and Si IIλ1260), the contribution for the labelled line alone is shown in red, while the total synthetic profile is shown in orange. Residuals are shown in the small panel above each line, with the orange line showing the 1σ error level. The location of the different components of the model are indicated by blue vertical dashed lines, with short red marks showing the position of H₂ components. The zero of the velocity scale is set to z_ref = 2.631.