Table 1. Sequencing error as a function of quality score.

Quality score	Sequence error
1	1.9 x 10−3
5	6.1 x 10−4
14	1.3 x 10−4
21	5.9 x 10−5
26	2.3 x 10−5
32	5.3 x 10−6
36	1.0 x 10−6
39	3.9 x 10−7

Sequencing errors determined by the overlap between reads #1 and #2 for the PTPN11 (testis #62923) and MECP2 (testis #60891) experiments combined (41 libraries). Sequencing error probabilities are for base pairs with quality scores greater than or equal to the value in the first column.