Velocity profiles used for the comparison of the mapping methods. Left panel: radial speed profiles from the iso-poly model are shown as continuous lines (Dakeyo et al. 2022), and empirical Alfvén speed profiles are shown as dashed lines. Right panel: tangential speed profiles that account for corotation near the Sun (Macneil et al. 2022; Koukras et al. 2022). The dashed gray line represents a fully corotational solution (limit case). The pink curve represent an MHD simulation (Réville et al. 2020). The shaded gray region represents the coronal region limited upward by the source surface set at 2.5 R_⊙. The dashed vertical colored lines represent the associated Alfvén radii.