Symbols: parameters for the shells B1a, B1b, and B2 as in Table 1, normalized by the average ${\overline{r}}_0$ and V_K(${\overline{r}}_0$) of each shell. Curves: trends predicted by the models L1 (λ=1.56, orange) and L2 (λ=2.76, blue) of winds from an AD-dominated disk region, and by the model N 5 (λ=5.64, purple) of a wind from a fully turbulent disk region (see text). The diamonds indicate the altitude at which the streamline crosses the corresponding Alfvén surface.