Summary of our atmospheric retrieval results for T1 outlined in Sect. 3.4, with the 1D and 2D marginalised posterior distributions of each of our model parameters displayed. The red and grey posterior distributions represent independent sub-chains, of the same MCMC chain, both converging to similar distributions. The various global, morning, and evening parameters are highlighted. The T-P profiles on the right were computed from 10,000 random samples of the MCMC; the solid curve shows the median profile, and the shaded regions show the 1σ, 2σ, and 3σ contours, for both the morning and evening limbs. The horizontal dotted lines are the median retrieved cloud deck pressures, log₁₀(P_cloud), below which the model spectrum is truncated. Also plotted are the mean contribution functions for the ESPRESSO wavelength range. This corner diagram was generated using CORNER (Foreman-Mackey 2016).