Comparison of the ν_max values extracted from our synthetic single-RG PSDs. We tested synthetic light curves containing only a pulsational signal (triangles), and both a pulsational and a granulation signal (circles). The vertical axis corresponds to the scaling relation (ν_{max, scaling}) input values of the light curves, and the horizontal axis corresponds to the percentage difference between the fit (ν_{max, fit}) and the scaling relation (ν_{max, scaling}) values. The vertical dashed line represents the zero-point of the difference between ν_{max, fit} and ν_{max, scaling}. The dash-dotted lines represent the 1σ level about the mean scatter of the datapoints corresponding to the pulsational signal (red), and both the pulsational and granulation signals (green). The horizontal dotted lines connect the datapoints corresponding to the same RG model. The error bars correspond to the 68% Bayesian credible intervals of the marginalised posterior distributions of the fit parameters. The symbols are colour-coded according the logarithm of the white noise (log W) included in the light curves and PSDs.