Distance between the two ridge lines at every 0.01 mas from the core (Δd_ridges), transverse jet width (W), apparent jet opening angle (Θ_app), and a profile of flux density as a function of the distance from the core (r), shown from top to bottom. A simple power-law form is fitted to the width profile in three different areas divided by r = 0.07 mas and 0.28 mas to take into account any flattening feature resulting from resolution limits and low S/N. The opening angles are considered only when r ≥ 0.07 mas. The outer part of the emission profile (i.e., r > 0.15 mas) is enlarged separately. More details of the measurements can be found in Appendix C.