Circularisation radius (the semi-major axis if the orbit was circularised by tides) of the inner and outer orbit of each system at the onset of mass transfer initiated by the primary star. Colour-coded are the maximum amplitudes of the inner eccentricity induced by three-body dynamical interactions. Their distribution is also presented as a histogram. A value of indicates that, during a single oscillation, the inner eccentricity has varied between 0 and 1.