Solid black lines: marginalized probability distributions for each of the model parameters, given in each of the columns, after performing the retrievals ten times for as many different noise realizations of the measured spectra. Top rows: no-cloud scenario, both for R_p unknown and known. Middle rows: thin-cloud scenario, both for R_p unknown and known. Bottom rows: thick-cloud scenario, both for R_p unknown and known. Vertical green lines mark the true values of the model parameters (see Table 2) for each scenario.