Corner plot for the radiative grid. Made using period spacings in a Mahalanobis distance merit function and spectroscopic and luminosity constraints from the primary star. The 50% best models are shown, colour-coded according to the log of their merit function value (at right). The models in colour fall within the 2σ error ellipse of the MD constructed using Eq. (9), whilst the models in grey fall outside of this error ellipse. The figures on the diagonal show binned parameter distributions of the models in the error ellipse, and the panel at the top right shows a Hertzsprung–Russell diagram with the 1 and 3σT_eff and log L error boxes.