a) Shows the ecliptic latitude distribution of all MBAs in our sample except the Koronis family members. The width of bins in latitude β corresponds to similar surfaces on the (λ, β)-sphere, so the bins are equidistant in sinβ. In b), the longitude distribution of all MBAs is plotted, again except the Koronis family members. The longitude bins are equidistant in λ. In the top right corners, there are the probability values of the χ²-tests (that the observed distributions are randomly drown from a uniform distribution, see Table 2).