Evolution of the galactocentric speeds (v) of the objects in the solar neighbourhood, for the different Maxwellian kick distributions (σ = 10, 20, 50, 100, 200, and 500 km/s, for each column), shown in 2D histograms with velocity bins of 30 km/s and time bins of 1 Myr. The top row shows the results using the exponential disc prior (cf. Appendix B of Disberg et al. 2024), while the bottom row shows the results using the Gaussian annulus prior. The black lines correspond to the median speed at each time bin. We note that the colour-scale differs for each panel, because the number of objects in the solar neighbourhood differs for each kick distribution.