Number density maps of the MP (left) and MR (right) components, obtained by convolving the MP/MR relative fraction of stars from the MDF and the global stellar density map from Valenti et al. (2016). Open circles show the grid of fields used in the interpolation, resulting from folding the measurements in the GIBS fields with respect to both Galactic latitude and longitude. The maps are normalized to the same color scale. The figure is reproduced from Zoccali et al. (2017); see the original paper for details.