Notes. The errors correspond to a statistic variation ΔC = 1. ⁽¹⁾The models are reported with their Xspec names. ⁽²⁾Intrisic absorption in units of 10²² atoms cm⁻². ⁽³⁾Normalization of the model, corresponding to K = L/D² (with L luminosity in units of 10³⁹ erg s⁻¹ and D distance of the source in units of 10 kpc) for the BBODY model, K = (R²/D²) cos θ (with the internal radius R in km and θ inclination of the disc, θ = 0 indicating face-on configuration) for the DISKBB model, and kṁ/ṁ_Edd for the SLIMD model. ⁽⁴⁾BH mass in units of 10³ M_⊙. Derived from the model normalization for the DISKBB and as a fitted parameter for the SLIMD model, in both cases under the assumptions of the Schwarzschild metric and θ = 45°. ⁽⁵⁾Unabsorbed luminosity in units of 10³⁹ erg s⁻¹ in the 0.3–7 keV band. ⁽⁶⁾Value of the C-statistic divided by the degrees of freedom. ⁽⁷⁾Goodness of the fit from Monte Carlo simulations.