Fig. 4
From: Estimates of introgression as a function of pairwise distances
The effect of window size. For P3→P2 introgression we varied window sizes (0.5, 1, 5, 10, 50 kb) and calculated for each statistic (D, fd and df) a the adjusted R2 ’goodness of fit’. b SSLF ’sum of squares due to lack of fit’ divided by the sample size n=100. c SSPE ’pure sum of squares error’. The recombination rate is r=0.01. The background history is: P12= 1×4N, P123= 2×4N and P123O= 3×4N generations ago. Time of gene-flow is set to tGF=0.1×4N generations ago. The calls to the ms program can be found in the caption of Additional file 1: Table S1.6