Table 1. Description of possible read mapping conditions.

Mapping Condition	Description
multi_on	Read fragment maps multiple locations including region of interest.
multi_off	Read fragment maps to multiple locations not including region of interest.
single_on	Read fragment only maps to region of interest.
single_off	Read fragment maps to one location but it is not a region of interest.
no_map	Read fragment does not map to the reference.
no_seq	No sequence was obtained for the signal fragment.