The contribution of each epigenetic state to gene regulation is inferred from a multivariate regression. These beta coefficient scores are assigned to the epigenetic states. There are 25 values in these tracks, one for each state. The values are assigned to the 200 bp windows. These scores are genome-wide except in blacklisted regions.
Interspecies regulatory landscapes and elements revealed by novel joint systematic integration of human and mouse blood cell epigenomes. Guanjue Xiang, et al. biorxiv