Extension to X-rays. Top panel: The AGN luminosity at 5100 Å inferred from GRAHSP is compared to the 2 − 10 keV luminosity from X-ray observations in the DR16QWX sample. Points are colour-coded by redshift, with yellow indicating the highest redshifts. Bottom panel: The ratio is shown as a black histogram. For comparison, the grey dashed curve represents the mean ratio and scatter observed by Koss et al. (2018).