Results of atmospheric retrieval for WASP-117b with Model 3 (gray cloud and haze layer with prior [Fe/H] < 1.75 and γ > −6). Left: fit to the transmission spectrum reduced with the nominal data pipeline by Zhou et al. (2017). Right: fit to the transmission spectrum reduced with CASCADE. For both spectra, retrieved atmosphere models with confidence within 1σ (dark green) and 2σ (light green) are shown. These models were derived with petitRADTRANS (Mollière et al. 2019) and indicate a cloudy atmosphere with a muted water feature.