As in Fig. 8 (bottom) with the addition of K2/SSO/LT data points (Ducrot et al. 2018) and Spitzer IRAC Ch. 1 and Ch. 2 data (Ducrot et al. 2020), shown here corrected for stellar contamination scenario 3Tm, the “best-fit” configuration. We also include our carbon-dioxide-rich atmospheric model to compare against the data, though in all scenarios for the stellar photosphere, we minimize the χ² with the flat “high mean molecular weight/no atmosphere” model, which we report as after each transit depth scenario in the legend. We note that we have applied offsets to the K2, SSO, LT, and Spitzer data, as discussed in the text.