Table 4.

Alignment statistics of the NPC data

Mapping strategy	Reference	Mapped reads	Unmapped reads
C666-1
Direct	hg19	2,399,396,153	111,814,507
	mm10*	6,121,700	2,505,088,960
Filtering	hg19**	2,392,763,986	111,689,642
Combined	hg19	2,340,660,573	170,203,874
	mm10	346,213
C15
Direct	hg19	1,786,870,566	768,689,454
	mm10*	681,133,817	1,874,426,203
Filtering	hg19**	1,768,136,467	85,616,069
Combined	hg19	1,784,069,633	95,357,988
	mm10	676,132,399

*For comparison, we also aligned all reads to the mouse reference.

**These are the numbers of reads aligned to the human reference after discarding those aligned to the mouse reference.