Distribution of the RV and RGB samples in vertical velocity V_Z against L_Z. The panels divide the data into three bins of 30° width in the azimuth angle, which increases in the direction of Galactic rotation. The middle panel covers stars about 15° either way of the Galactic anticentre. Two dashed black lines are plotted at the positions of the OLR (1.08 L_Z, ⊙), and at the Cepheid gap (1.424 L_Z, ⊙) in Fig. 2. The vertical green line marks the discontinuity (1.3 L_Z, ⊙) noted in recent papers (Gaia Collaboration 2021b; McMillan et al. 2022).