Retrieval results with TauREx assuming an isothermal profile. Cases with and without thermal inversion in the input atmosphere are shown in light and dark green, respectively. We plot the temperature (top left), [CO ]∕[H₂O] (top right), the CO (middle right) and the H₂O (middle left)abundances, the planetary radius (bottom right) within 1σ error, and (bottom left). These results have been obtained with nonrandomized spectra but calculations,and TauREx assumes a 30 ppm 1σ Gaussian noise on the whole spectral domain. The red line represents the input value in the GCM simulations, and the dashed red line shows where .