Retrieved P–T proflies compared to the input profiles (solid black line) for the various scenarios, ordered by epoch (columns) and cloud coverage (rows). The scenarios are color-coded according to Table 1. In each subplot, we also show an inset plot with the two-dimensional histogram of the retrieved surface P–T values. The 1σ, 2σ% and 3cr confidence levels in the P–T profiles and the two-dimensional histograms are indicated by the increasing intensity of the color fill (darker shading corresponds to a higher confidence).