Corner plot of EY Hya to exemplify correlations between the different free parameters. The 1D curves display the log-likelihood functions, the solid red line indicates the most likely value and the dashed red lines and shadowed region the ±1σ values. The 2D histograms display the χ² distributions, the dashed red and black lines indicate the areas with values lower than χ²+1 and χ²+2 respectively.