Main properties of the JPAS+DESI catalogue (4328 galaxies) as a function of redshift. From top to bottom, we show the number of galaxies, the r_SDSS band magnitudes, stellar masses, and redshift precision distributions. The contours enclose 68, 95, and 99.7% of the data points, respectively, from the inner to the outer lines. Black solid lines show the properties of the observed JPAS+DESI catalogue (Sect. 2.3) while purple dashed ones correspond to the mock catalogue introduced in Sect. 3. For illustration, pink dots show a random subsample of the raw lightcone galaxies from which the mocks were derived. Orange and blue colours correspond respectively to galaxies from the matched (common) catalogue and from the J-PAS only dataset. The scattered points illustrate a random subsample of 1500 galaxies from the total JPAS+DESI catalogue.