Example spectrum of DR14Q quasar identified by (Plate, MJD, FiberID)=(7305, 56 991, 570) at z_q = 3.0. The blue line indicates the best-fit model for the Lyα region covering the rest-frame wavelength interval 104.0 <  λ_rf <  120.0 nm. The red line indicates the same for the Lyβ region over the range 97.4 <  λ_rf <  102.0 nm. The Lyα and Lyβ emission lines are located at λ_α = 121.567 nm and λ_β = 102.572 nm in the quasar rest-frame. The spectrum has not been rebinned into analysis pixels in this figure.