From top to bottom, row 1: median formal precision as a function of grvs_mag magnitude for different samples of metal-rich stars selected along the giant branch. The range of rv_template_logg of each sample is provided in the legend. Row 2: same as row 1 for samples of metal-rich stars selected along the main sequence. The range of rv_template_teff of each sample is provided in the legend. Row 3: same as row 1 for giant stars, selected in different ranges of metallicity. The range of rv_template_fe_h of each sample is provided in the legend. Row 4: same as row 1 for dwarf stars, selected in different ranges of metallicity. The range of rv_template_fe_h of each sample is provided in the legend. The 68.3% confidence interval on the measurements of the median formal precision is represented as shaded areas.