Outcome of the mode identification and extraction procedure. Top: replicated échelle diagram displaying the mode frequencies extracted for ϵ Indi (cf. Table 1). The smoothed power spectrum is shown in grey scale. The vertical dashed line gives the measured Δν value. Bottom: likelihood-weighted histogram of ε Δν for the models in the grid (see text for details). The observed ε Δν is represented by a vertical dotted line.