Results from the validation run outlined in Sect. 3. (a) Corner plot for the posterior distributions of the planetary surface temperature T₀, surface pressure P₀, radius R_pl, mass M_pl, and retrieved abundances of different molecules. The red lines indicate the values used to generate the input spectrum. Additionally, we plot the retrieved median and the 16th and 84th percentile as dashed lines in every posterior plot. (b) Retrieved P−T profile. The shaded green regions show the uncertainties on the retrieved profile. In the bottom left corner of the P−T profile plot, we display P₀ and T₀. The red cross marks the input values. (c) The retrieved emission spectrum F_retrieved relative to the input emission spectrum for the retrieval F_input.