Left panel: density distribution of stars used in the simulation analysis. The stars analogous to RC1 in red (3 < d < 11 kpc) and those to RC2 are shown in blue (12 < d < 16.5 kpc). They lie within 1 deg < |b| < 1.5 deg. Middle panel: μ_l* distribution for RC1 and RC2 with the median marked with solid lines. Right panel: stellar density distribution in μ_l*–d space. The dashed black line shows the centre of the model, while the cyan curve represents the median μ_l* in each distance bin.