First row: density distribution of r_t (distance in the Galactic plane with respect to the Galactic centre at the final time of the simulation) of bulge stars at different slices in | z | for the whole sample (in black) and for stars at birth radii r_ini< 2.5 kpc (in blue) and r_ini ≥ 2.5 kpc (in red). Second row: density distribution of V_t (total Galactocentric space velocity at the final time of the simulation) of bulge stars at different slices in | z | for the whole sample (in black) and for stars at birth radii r_ini< 2.5 kpc (in blue) and r_ini ≥ 2.5 kpc (in red). Only disk stars with | x | ≤ 2.5 kpc, | y | ≤ 3 kpc, and | z | ≤ 5 kpc were selected.