Total granulation amplitudes and characteristic frequencies as a function of v_max obtained by the three background models of Table 1. In all panels, the dashed lines represent the corresponding scaling relation for the parameter from Kallinger et al. (2014). Top row: total granulation amplitudes colour-coded by the stellar metallicity [Fe/H] for the 724 stars with available temperatures. Bottom row: the characteristic frequencies of the individual granulation components for the 746 stars with consistent posteriors, with colours as indicated by the legend.