Radial and vertical structure of MAPs. The background map shows the stellar mass in the [Mg/Fe] vs. [Fe/H] plane. Each subpanel shows the radial (left) and vertical (right) density profiles of MAPs selected in the abundance range from the background map. The colour of lines in the subpanels corresponds to the exponential scalelengths (left) and scaleheights (right) according to the colour bar. In the left subpanels, the low metallicity part of the low-α sequence does not show exponential profiles but rather a donut-like distribution, where the exponential fit fails to recover meaningful values of the scalelength. On the left, the location of the solar radius is marked by the red vertical lines.