Concentrations of the SPARC galaxies against halo masses for the seven halo models. Solid lines are the expected relations from N-body simulations (Macciò et al. 2008), which are model dependent and not available for the pISO and Burkert profiles. Dark and light shadow regions represent 1σ and 2σ standard deviations, respectively. The concentrations for the DC14 profile have been converted to that for NFW in order to compare with the imposed relation.