[Mg/Fe]-[Fe/H] diagram for kinematic structures detected for the scale J = 3. Numbers on each panel correspond to structures 1–19 as stated in the legend of Fig. 7. The last plot corresponds to the total sample with limits on S/N > 40 (47 849 stars). The red line at each density plot corresponds to [Mg/Fe] = 0.2 and divides the total sample into thick (above the line) and thin (below the line) disks. Dashed black lines show [Fe/H] = 0 and [Mg/Fe] = 0. Scatter plots at each density map show positions of individual stars on the diagram. Histograms at the top of each panel show the metallicity distribution for the total sample (black dashed line) and for each group (solid violet distribution). Values of μ and σ represent the violet distribution.