All measured dark-matter rotation velocities plotted together and compared to the fitted models. Left panel: comparison to the pISO model. R and V_DM have been normalized with R_C and , respectively. Right panel: comparison to the NFW-halo model. Here, R and V_DM have been normalized with R_s and , respectively. Gray points with light gray errorbars indicate individual V_DM measurements. The black filled circles show averages in radial bins containing 20 measurements each.