I have a set of genomic locations I would like to intersect with the relevant DNase Hypersensitive peaks from ENCODE. My question is simple, but the answer has been oddly hard to come by: what do the scores in column 7 mean? There is no mention of how the scores are calculated in the documentation and a search for the peak caller mentioned documentation (I-Max) came up empty. Here's a sample of the lines from one of the files (full file at https://www.encodeproject.org/files/ENCFF001YNU/@@download/ENCFF001YNU.bed.gz).
chr1 3002740 3002890 . 0 . 25 6.60995 -1 -1 chr1 3058240 3058390 . 0 . 15 3.99799 -1 -1 chr1 3085640 3085790 . 0 . 68 60.6165 -1 -1
My first inclination was that the scores indicated the number of cleavage sites in the 150 base windows but they range up into the 1000's, so that is clearly incorrect. Average tag density maybe? Hoping someone can steer me in the right direction. Thanks!