Average posterior probability (PP) of the topology of network C obtained by running MCMC_BiMarkers on data simulated from network C.

Results are given as a function of the number of sites and as a function of the number of lineages sampled in hybrid species B and C (either both 1 or both 4). Only one lineage was sampled in every other species, constant sites are included in the analysis, and the rates u and v are considered as known. 1.5 × 106 iterations are considered. is the average ESS over the different replicates, and SE stands for the sampler efficiency.