##fileformat=VCFv4.1
##FORMAT=<ID=GT,Number=1,Type=String,Description="Genotype">
##contig=<ID=chr1>
#CHROM	POS	ID	REF	ALT	QUAL	FILTER	INFO	FORMAT	sample
chr1	10	.	G	A	500.0	.	.	GT	0/1
chr1	20	.	G	T	500.0	.	.	GT	0/1
chr1	100	.	T	G	500.0	.	.	GT	1/1
chr1	200	.	T	C	500.0	.	.	GT	0/1
chr1	248	.	C	G	500.0	.	.	GT	0/1
