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Fig. 13

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Cumulative I-band AB-magnitude distribution of AGN in the COSMOS and XBOOTES fields with the 0.5−2.0keV flux exceeding the four-year eRASS detection threshold. The thickness of the curves represents the standard deviation of a binomial distribution. The vertical lines show the photometric sensitivities of the SDSS (21.3mag) and Pan-STARRS PS1 (22.6mag) and the magnitude limit for SDSS spectroscopy (19.1mag).

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