In black and grey, the default and high-mass posteriors of the fit of pre-extracted TTVs from Rowe et al. (2015) by Hadden & Lithwick (2017). In green and blue, we give the posteriors from the RIVERS analysis. Dark green shows the default posterior, light green the high-mass posterior, and blue the final posterior. The full photo-dynamical analysis reduces the prior dependency, thereby increasing massestimate robustness, for most planets of the sample.