Fit of the whole spectrum with the photoionisation model (dotted green line) from CLOUDY (left panel) and SPEX (right panel), plus a partially covered power law (dotted red line), and three Gaussians for the fluorescence lines of Fe Kα, S II-VIII, and Si II-VI (solid magenta lines). The total fit function is represented in black. The residuals of fit are in the bottom panels. Spectra were re-binned for the sake of clarity.