Osculating values of the secular angles – longitude of node Ω (abscissa) and longitude of perihelion ϖ (ordinate) – for members in the Adelaide family (epoch MJD 60 000.0). The black symbols show multiopposition orbits, gray symbols are for the singleopposition orbits; diamond symbol for (525) Adelaide, the largest member. The dashed line has the expected slope −0.5 (see, e.g., Figs. 1 and 9 for Datura and Rampo families), but the data are more scattered in the Adelaide case. This is likely due to Mars perturbation discussed in Vokrouhlický et al. (2021b).