Observed HST/COS FUV spectrum of QSO Q1410 (black line), and its respective uncertainty (green lines). The red line correspond to our fit of the spectrum (see Section 4.2), while the blue dotted line corresponds to the assumed unabsorbed pseudo-continuum (i.e. including broad emission lines and the Milky Way's DLA; see Section 2.2). Vertical tick lines indicate individual absorption lines, where the numbers correspond to the IDs given in Table 4 and the letters indicate their reliability (see Section 4.5). Grey points show the difference between our model and the observed data. We see that distribution of these residuals are consistent with the uncertainty of the data.