Scatter-density plots of the physical parameters inferred through M-E inversion codes (vertical axis) and the original values from the 3D MHD numerical simulations (horizontal axis). The values from the simulations are taken at for B (top rows), γ (middle rows), and v_los (bottom rows), respectively. Left column corresponds to VFISV, middle one to ASP/HAO, and right one to HeLIx⁺. Standard deviations σ are also indicated for each physical parameter and for each inversion code.