Masses of the components and the periods as a function of the astrometric signal. The underlying distributions (those of Langer et al. 2020) are shown with black dots and overplotted with those systems having 6 < G < 20 (orange stars). On top is the subset of systems that are detected in the conservative case (i.e. α > 3σ and a period lower than the imposed upper limit; cyan triangles). The left panels are for DR3 and the right panels for DR4. The discrete BH masses come from the discrete main-sequence primary masses in the simulations of Langer et al. (2020).