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Fig. 12.

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Photometry points for the HYPERION and E-XQR-30 samples, normalized at λ = 3500 Å. The red diamonds show the geometric mean value for each band with the associated 1σ as an error bar. Overplotted are also the mean SEDs by Krawczyk et al. (2013) (whole and luminous QSOs samples, purple dotted and blue dot-dashed lines, respectively) and the WISSH hyperluminous mean SED (dashed green line). The vertical dotted lines indicate the position of the Lyα at 1216 Å and the normalization wavelength.

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