Density map of the ellipsoidal variation amplitude (peak-to-peak) versus deviation from 0.5 of the phase separation between primary and secondary eclipse locations for the sample of sources with two Gaussians and an ellipsoidal component. The expression of Δ_0.5(φ_ecl) is given by Eq. (A.1). The dashed lines delineate the three samples 2GE-A (lower-left region), 2GE-B (upper-left region), and 2GE-Z (right region) defined in the text. The axis scales have been limited for greater visibility.