Notes. We note that only χ_img,S24,w², χ_ext,orig², and RMS (w) can be fairly compared across different models, as they are computed assuming the same observational uncertainties. The columns give from left to right the model acronym, whether the SN host image positions are included (Y) or not (N), the χ² term weighting, the number of degrees of freedom (d.o.f.), the image position chi-square value, as obtained from the optimization, the chi-square value of the extended image, as obtained from the optimization, the total reduced chi-square defined as χ²/d.o.f., the image position chi-square, adopting the uncertainties of S24 and always including the multiple image positions of the SN host, the extended chi-square value, by adopting the original error map as defined in Eq. (4), and, finally, the root mean square (RMS) from all multiple image positions (to allow for a fair comparison across the five models).