Velocity profiles for different parallax zero points. In the rotation curve (top left), as expected, the rotation curve computed using ZP₅₆ (orange curve) is slightly shifted to the left (R decreases by about 0.5 kpc at R = 14 kpc) and also decreases, but always in amounts smaller than ~2 km s⁻¹. In the vertical velocity plot (top right), we observe similar effects, though a notable effect is seen in the first kpc. The velocity dispersions (computed as the mad values, bottom) appear also slightly different, with ZP₅₆ yielding smaller dispersions but without changing the overall shape.