Top: spectral energy distribution (SED) fit of YSES 1 b using MagAO-X, SPHERE, and NACO data using an atmospheric model in combination with a dust extinction model and blackbody radiation to represent the CPD. The black line shows the best-fit (${\chi }_{\nu }^2$ = 1.46). The dash-dotted line shows the contribution of the blackbody component. The grey lines show 30 random samples drawn from the posterior distribution. The filled markers are the original data points, while the white markers show the synthetic photometry derived from the best-fit model. Bottom: deviation between data and synthetic photometry in units of the standard deviation.