Corner plot of the posterior distributions of selected parameters for TWA 27A and TWA 28. The parameters are the radius, surface temperature, surface gravity, logarithm of the volume mixing ratio of the H⁻ bound-free opacity, the α parameter of water, the carbon isotopologue ratio, the effective temperature and size of the blackbody, the logarithm of the column density, the excitation temperature and the size of the slab model. The titles indicate the median and the 16th and 84th percentiles of the posterior distributions for each target retrieved from the fit to the entire wavelength range.