Distribution of the best-fit values of 1000 XRISM Resolve simulations, using as input values log(ξ) = 4.0, v₀ = 0.10c and three different N_H = 10²³, 5 ⋅ 10²³, 10²⁴ (left, centre, and right column, respectively). The top, centre, and bottom rows report the best-fit values for N_H, log(ξ),v₀, respectively. Hatched and filled histograms correspond to the distributions before and after the inclusion of the emission component, respectively. Dashed and solid lines are the median values of the two distributions. Finally, the last panel reports the best-fit values of θ_out as a function of the input ones.