Columns in coverage map files: chr chromosome number midpoint middle position of the 1 Mb interval L1 number of common SNPs not in Affymetrix 500K (SNP Array 5.0) but tagged at r2 >= .8 by at least one SNP in the SNP panel within 250 kb L2 same as L1, but for Illumina 300K L3 same as L1, but for Illumina 550K L4 same as L1, but for Affymetrix SNP Array 6.0 L5 same as L1, but for Illumina 1M L6 same as L1, but for Illumina 650Y T1 number of common SNPs in Affymetrix 500K (SNP Array 5.0) T2 same as T1, but for Illumina 300K T3 same as T1, but for Illumina 550K T4 same as T1, but for Affymetrix SNP Array 6.0 T5 same as T1, but for Illumina 1M T6 same as T1, but for Illumina 650Y R number of common SNPs in the HapMap G estimated total number of common SNPs in the interval coverage1 local coverage rate of the interval for Affymetrix 500K coverage2 same as coverage1, but for Illumina 300K coverage3 same as coverage1, but for Illumina 550K coverage4 same as coverage1, but for Affymetrix SNP Array 6.0 (ignoring the ~10% SNPs of the chip that are not on the HapMap) coverage5 same as coverage1, but for Illumina 1M coverage6 same as coverage1, but for Illumina 650Y leftpos distance from midpoint to the leftmost common SNP in the interval (negative value means the leftmost common SNP is on the right side of the midpoint) rightpos same as leftpos, but for the rightmost common SNP in the interval midpos distance from midpoint to the middle common SNP mininter minimum adjacent-marker distance in the interval maxinter maximum adjacent-marker distance in the interval meaninter average adjacent-marker distance in the interval medianinter median adjacent-marker distance in the interval cvinter coefficient of variation for adjacent-marker distances Affy60NotOnHM number of common SNPs in SNP Array 6.0 not on the HapMap coverage4b alternative estimate of coverage for SNP Array 6.0, taking into account the SNP that are not on the HapMap The average of coverage4 and coverage4b is plotted. Illu1MNotOnHM number of common SNPs in Human1M not on the HapMap coverage5b alternative estimate of coverage for Human1M, taking into account the SNP that are not on the HapMap The average of coverage5 and coverage5b is plotted.