Abundance ratios [X/Fe] vs. metallicity [Fe/H], displaying one element X in each panel. Gray downward triangles indicate upper limits. The background sample was selected and the corresponding abundances were calculated following the procedure described in Sects. 2.2 and 3.2, respectively. In the case of S, the background stars and their corresponding abundances have been extracted from the VAC from Hayes et al. (2022). The color-coding reflects the number density of the stars. For clarity, error bars are suppressed. The errors adopted for each element are given in the title of each panel and correspond to the average standard deviation listed in Table D.2. The error of the metallicity [Fe/H] is ±0.08.