Ratio of best-fit parameters of ɛ Eri over the same parameters selected from the grid with ARs 40%, COs 6–60%, and FLs 0–2% of COs. The flare EMD is the time-averaged distribution of the flares presented by Reale et al. (2001) discussed in Sect. 3.1. The error bars are the errors on the ratios found from error propagation, taking into account both the uncertainties of observed best-fitting parameters and of the 10 and 90% percentiles of the 1000 selected representations.