Triangle and trace plots of the synthetic light-curve fitting. Top: Triangle plot, a combination of 1D and 2D marginalized posteriors, with the dashed lines denoting the median and 2σ or (90%) confidence levels (left and right). Similarly, the contours are for 90% (outer) and then 50% and 25% confidence levels. The truth is marked with red lines. Bottom: Trace plots showing the evolution of particles (and their marginal posterior distributions) in 1D projections, where lnX denotes the prior volume of the parameter space. The dots are color-coded with respect to their relative posterior mass, meaning that bright yellow values are present when convergence is achieved.