Bayesian model averaged posterior distribution for H₂O from the HST/WFC3 retrievals. The black line indicates the median of the distribution, and the dashed lines are the ±34.1% confidence regions. The orange lines shows the solar value (log(χ_H2O) = −3.70) at 1 mbar and 1200 K. Since most of the models used for the BMA do not include clouds, the results are more heavily weighted towards the cloud-free solution, and therefore lower H₂O abundances (see text).