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Fig. 6

image

Spectrum of the highest redshift (z = 6.440) quasar observed by BOSS is displayed in the top left panel. This quasar was discovered by Fan et al. (2001). Typical spectra of SEQUELS quasars are presented at five different redshifts: z ~ 1.2 (top right panel) and z ~ 1.6 (middle left panel). Typical BOSS quasars are shown at three different redshifts: z ~ 2.2 (middle right panel), z ~ 2.7 (bottom left panel) and z ~ 3.5 (bottom right panel). All the spectra are smoothed over 5 pixels.

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