This is file 4 (admix data) of 4 input files needed for running the R package INTROGRESS v1.22 (Gompert & Berkle 2010). These files together allow maximum-likelihood estimate of the ancestry (multilocus hybrid score) of each individual, and genomic cline analysis, which compares admixture at a single locus to average admixture across the rest of the genome. We used the parametric approach, first estimating a multilocus hybrid index and then fitting clines in genotype frequencies at individual SNPs as a function of the neutral expectation derived from the genome-wide hybrid index