Results of retrievals comparing each of the three data processing algorithms. (a) Posterior distributions for retrievals from each data processing algorithm. Contours are plotted for 2D Gaussian 1, 2 and 3σ levels, corresponding to 36%, 86% and 99% confidence intervals, and the ground truth value is marked in black. The text labels correspond to the KLIP retrieval. (b) Median-fit spectrum from retrievals on each algorithm, with the covariance (other than for ANDROMEDA). (c) P–T Profiles for each retrieval. The shaded region indicates the 68% confidence region for the retrieved profile.