Top: Variation of the dynamical time t_dyn = z/V_z with vertical distance from the source z of the flow substructures B1a, B1b, and B2 as derived from the tomographic analysis. Bottom: Comparison between the normalized dynamical time $t_{\mathrm{d}\mathrm{y}\mathrm{n}}/t_0=\left(z/V_z\right)/({\overline{r}}_0/V_{\mathrm{K}}\left({\overline{r}}_0\right)$ derived for each of the three shells and the analogous quantity estimated for the MHD disk wind models L2 (blue) and N5 (purple) illustrated in Section 5.4.