(A) Phase diagram in the space parameter (d_c, L_p) for the hard-discs suspension of Figure 1. Seven distinct phase topologies are distinguishable, say, for fixed L_p and increasing d_c: all hot, small clusters, one cluster, bands, one cavity, small cavities, all cold. Configurations with many small clusters or cavities are hard to detect at too low or too large values of L_p, i.e., of the QS threshold in Eq. (2) (see text). (B) Fraction of cold particles, N_m/N, vs. d_c for L_p=10. All remaining parameters are as in Figure 1. Vertical colored bands in (B) locate the different phase topologies from (A).