Upper: PKS-0232-04 at z = 1.4428 is a typical example of the extremely high signal-to-noise QSAGE WFC3 quasar spectra. The spectrum contains the bright emission lines H β, [O iii], and H α (dominating over the [S ii] emission), and the weaker He I line. The Fe ii complex of multiplets at 5100–5400 Å  are also present. Lower: The spectrum of the highest redshift quasar in our sample is QSO-B1122-168 at z = 2.4181, which contains the emission lines H β, H γ, H δ, [Ne iii], and the Fe ii complex of multiplets at 4400–4700 Å. The lack of [O ii] emission is likely due to the radiation from the quasar causing a high ionization state, which means that most of the oxygen emission is via [O iii] instead.