The HapMap_6_chr22.seq file contains sequencing reads for 6 HapMap samples, including 1 CEU trio and 1 YRI trio.
Sequencing reads are piled up to 9608 SNP markers on chromosome 22.

The HGDP_200_chr22.geno file contains genotype data for 200 samples randomly selected from 938 HGDP samples from 53 worldwide populations.
9608 SNP markers on chromosome 22 are included. 

The HGDP_200_chr22.site file provides detailed information of the 9608 SNP markers.

The HGDP_200_chr22.RefPC file contains coordinates of the first 8 PCs for the 200 HGDP samples, obtained by performing PCA on genotypes at 9608 loci.
 

