Table 1. Major characteristics of DGEP libraries and mapping information.

Sample	Raw	Trim adaptor	Drop low quality	Drop CopyNum = 1 (clean tags)	Distinct clean tags	Mapped tags	Mapping rate
0 h	3503924	3420205	3420205	3314401	135590	113281	83.55%
24 h	3202434	3061865	3023002	2743030	207118	135265	65.31%
48 h	3719941	3173209	3166328	2986395	92100	135265	75.32
72 h	7762517	3487600	3474314	3373054	98148	72965	74.34%

Trim adaptor: adaptor tags were filtered.

Drop low quality: low quality tags were filtered.

Drop CopyNum = 1: tags of copy number = 1 were filtered.

Distinct clean tags: different kinds of clean tags.