Evolution of the minimal χ² and associated values of the parameter at the minimum, when different parameters were covarying for log M₂₀₀. Each colour highlights the iteration step and the symbols correspond to the different parameters covarying in the 2D grid. In iteration 7, log M₂₀₀ was kept constant as seen in Table 5. The top panel shows the evolution of the minimal χ² value for the individual 2D covariation compared with the global minimum of χ² for all grids and iterations. The bottom panel shows the difference between the value of the parameter at the minimum with 1σ uncertainties and the value of the parameter shown in Table 5 at a given iteration. The grey horizontal line is shown as a guide.