Left panels: EW_J0395 as a function of the effective temperature from J-PLUS photometry (black bullets). The top panels show the 38 white dwarfs with a metal dominant type (DZ, DZA, DZB, etc.) and the bottom panels the 21 white dwarfs with a non-dominant metal type (DAZ, DBZ, etc.) as purple circles. The spectroscopic type is from GF2l for SDSS DR16 spectra with S/N ≥ 5. Right panels: cumulative distribution function (CDF) in EW_Jo395 for the total sample (black) and the metal-polluted sample (purple). The black and purple circles with error bars depict the median and the [16,84] percentiles of the distribution.