Fig. 1.
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Observed HST/COS FUV spectrum of QSO SDSSJ161940.56+254323.0 in black. The green line shows the 1 − σ uncertainty of the spectrum. The red line corresponds to the modeled pseudo-continuum. The gray line shows the HST spectrum convolved with a Gaussian kernel with a FWHM of 1 Å. Figure 6 shows a zoom-in of the QSO spectrum at their wavelengths.
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