chr,start,end
chr1,1,249250621
chr2,1,243199373
chr3,1,198022430
chr4,1,191154276
chr5,1,180915260
chr6,1,171115067
chr7,1,159138663
chr8,1,146364022
chr9,1,141213431
chr10,1,135534747
chr11,1,135006516
chr12,1,133851895
chr13,1,115169878
chr14,1,107349540
chr15,1,102531392
chr16,1,90354753
chr17,1,81195210
chr18,1,78077248
chr19,1,59128983
chr20,1,63025520
chr21,1,48129895
chr22,1,51304566
chrX,1,155270560
chrY,1,59373566
