Table 1. Read codes and their definitions and an example of each read code for a site sequenced at depth 6.

Read code	Description	Example
0	All reads are of major type	AAAAAA
1	Reads consist of two types (excluding singletons/doubletons)	AAATTT
2	All reads are of minor type	TTTTTT
3	Singleton (of minor type)	AAAAAT
4	Doubleton (of minor type)	AAAATT
5	Doubleton (of major type)	AATTTT
6	Singleton (of major type)	ATTTTT
7	Reads comprised of >2 nucleotides	AAAACT