Fig. 7.

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Results of the application of the fitted colour selection based on griz photometry, reported in Table A.1, to the datasets introduced in Sect. 4.3. From left to right: completeness, purity, foreground failure rate, and background density as a function of zl. The assumed zl precision is δzl = 10−3. The griz selection is applied to the B20 catalogue with magnitude limits corresponding to those used in the calibration process (blue solid lines), to the full depth Moutard et al. (2016) catalogue (green solid lines), and to the Weaver et al. (2022) catalogue with HSC Kron, 2″ and 3″ aperture magnitudes (solid red, dashed orange and dotted black lines, respectively), for which we imposed i < 25.
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