Asteroseismic mass as a function of ν_max (panel a)) and of the asteroseismic radius (panel b)). The color code indicates the evolutionary status; clump stars in red, giant branch stars in blue, unknown status in dark grey. The population of giants with low ℓ = 1 amplitude (identified later in Sect. 7.1.1) is indicated with black squares. The rectangles in the upper right corners indicate the mean value of the 1-σ error bars.