Posterior distributions of the atmospheric and orbital parameters for WASP-43b using the data of night 1. The top right panel shows the median T−p profile, which was computed from 10 000 random samples of the MCMC walkers. The blue shaded region indicates the 1σ uncertainty interval, while the vertical dotted line shows the equilibrium temperature of WASP-43b (T_eq = 1426.7 K). The mean contribution function for the wavelength range of our observation is shown in grey.