Chrom	Bin	dN/dS ratio
chr1	20000	0.606060606060606
chr1	40000	0
chr1	60000	5.5
chr1	80000	0.363636363636364
chr1	100000	0.764705882352941
chr1	120000	1
chr1	140000	1.11111111111111
chr1	160000	7
chr1	180000	2
