De-reddened HR diagram of the anticentre region and different selected populations. The diagram is shown for the 3 369 456 sources of the AC20-ϖ∕σ_ϖ > 3 sample with available photometry (G, BP, RP) and extinction data and absolute magnitudes derived considering the d_PM distances. We over-plot three PARSEC stellar isochrones with [M∕H] = 0 for the ages of 0.2, 2 and 8 Gyr, a line at BP − RP = 0.65 and a diagonal line following the extinction slope used for the selection of populations (Method I) which appear in different colours. The RC have been selected using a different method (Method II).