Similar to Fig. 5, but using the assumed fixed temperature T₀ instead of Cloudy’s temperature T(r) to calculate the synthetic spectral lines. As a consequence, the observational fits shown in blue are different. The thick gray lines indicate the best-fit Parker wind models from similar analyses in the literature: Lampón et al. 2020 for HD 209458 b, Vissapragada et al. 2020 for WASP-69 b, Mansfield et al. 2018 for HAT-P-11 b and Paragas et al. 2021 for HAT-P-18 b (who used a transit depth of 0.46 ± 0.12% that is lower than our used value of 0.70 ± 0.16%). The thickness of the gray lines is arbitrary and does not represent the confidence intervals of those studies.