Distribution of red giant stars in Milky Way disc from APOGEE DR17. The red giant stars are colour-coded by their average galactocentric radial velocity. The location of the Sun is indicated by the yellow star. The dashed black lines mark concentric circles at ΔR = 2 kpc. The solid lines indicate constant Galactic longitudes. The region within 5 kpc of the Galactic centre is masked as the stellar motions in that region are influenced by the bar.