The effect of different bin overlapping used in the selection procedure. The top, right pair of panels is the same as the top row of Fig. 6 (bin overlap of 0.3 kpc), showing the fractional changes in the vertical and radial velocity dispersions due to migrators, Δσ_z(r) and Δσ_r(r), respectively. We contrast four possibilities: bin overlap of 0.1, 0.3, 0.5 and 1 kpc. The overall shapes of the functions plotted remain the same, while, naturally, structure is lost with an increase in the distance between overlapping bins, i.e., for 0.1 to 1 kpc.