Dynamical timescales of the density enhancements responsible for the high-velocity cusps in the channel maps, as a function of the launching radius r₀ of the streamline under the cold MHD disk-wind hypothesis (assuming λ = 1.58). For each cusp, the red dashed line represents the best linear fit of τ(r₀) and its corresponding velocity. The one σ domain is shown in gray and the uncertainties of the fits are noted on the right.