Phase space projections of the Galaxy disc. The plots show for the AC20-ϖ∕σ_ϖ > 3 sample: (a) median Z coordinate in the R- plane; (b) median vertical velocity in the same projection; (c) dispersion inthe velocity in the same projection (computed as the 1.5MAD); (d) phase spiral in the 6dsample in EDR3 for stars in the Galactic radial range |R − R₀| < 0.2 kpc; (e) median azimuthal velocity in the R- plane; (f) dispersion in in thesame plane. The bimodality appears in the outer parts of the disc in panels a–c, with the separation marked with a line of constant angular momentum . Panel e:evolution of a slice of the phase spiral (marked in brighter colours in panel d) is seen for smaller radii, while a signature related to the above bimodality is seen beyond ~ 12 kpc in panels e and f.