Corner plot summary of the posterior distributions of the Age_young, its scatter, and the degrees of freedom of the Student-t distribution obtained for the four subregions of the inner ring of the Cartwheel galaxy. The panels on the diagonal show the 1D histogram for each model parameter obtained by marginalising over the other parameters, with median and 16%–84% intervals indicated by solid and dashed lines, respectively. The off-diagonal panels show 2D projections of the posterior probability with contours at the 68% and 95% levels.