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Fig. 15


Left panel: mean flux redshift evolution inferred from power-law (red triangles) and PCA (blue squares) estimates of the continuum using a sample similar to Bernardi et al. (2003); the mean flux evolutions reported by Bernardi et al. (2003) and Faucher-Giguère et al. (2008) are shown as grey points and black open circles. Our measurements are consistent with the B03 and FG08 results. In particular, a departure from a smooth evolution is visible at z ~ 3.2. Right panel: 500 samples were randomly drawn from the SDSS-DR7 (similar in size and redshift distribution to the B03 sample) and the mean flux evolution for each sample was then computed. The average of these measurements is displayed (PCA continuum, blue squares) and excellently agrees with the Faucher-Giguère et al. (2008) measurement.

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