Normalised Kolmogorov–Smirnov parameter for the (g − i) colour distribution of stars () and galaxies (). The coloured symbols show the estimation on individual J-PLUS EDR pointings. The colours and symbols mark different magnitude ranges, 15 < r ≤ 18 (green diamonds), 18 < r ≤ 19 (yellow triangles), 19 < r ≤ 20 (blue squares), and 20 < r ≤ 21 (red circles). The dashed lines mark D_KS = 1.62, the limit where the PDF-based and the SDSS-based distributions can be considered similar. The exclusion areas with D_KS >1.62 are shown in grey.