Figure 1.

Genotype sequencing qualities generated in Pilot Study 3 of the 1000 Genomes Project. Sequencing qualities in terms of genotype quality scores (GQ) and probability of sequencing errors (1 − Pr) are displayed, where 1 − Pr = 10^−GQ/10. A total of 2385 rare variants are called, amounting to 214 650 genotypes at various coverage depths. (a) Plot of sequencing qualities at all genotypes, with coverage depths spaced logarithmically. (b) Modified box plot of genotypes at coverage depths of 5×, 10×, 20×, 30×, 50× and 100×. Short, bold lines are drawn at the median. Each whisker ends at the 1 and 99% quantiles, and each box encloses the 5–95% interval.