χ² distribution of our dynamical models to constrain intrinsic shape and dark matter parameters for the mass model with constant M_*/L. The seven hyper-parameters are the mass scaling factor S (in solar units), the black hole mass in solar units, the dark matter concentration c, and dark matter halo mass in units of the stellar mass M₂₀₀/M_star, the intrinsic minor-to-major axis ratio q, the intrinsic medium-to-major axis ratio p and the ratio between projected and intrinsic major axis u. Each point is one model that is colour-coded according to its χ² value as shown in the colour bar, where (χ²- indicates the models within 1σ confidence interval. Here, n_GH corresponds to the number of fitted Gauss-Hermite moments (4) and N_kin is the number of kinematic bins. The black cross marks the best-fitting model.