Table 3.

Frequency and count label of obligate lateral edges by intra-phylogenetic group and inter-phylogenetic group subsets. Frequency is calculated by dividing the count of obligate edges by the number of possible within-group connections. The median and ranges for edge labels are shown in parentheses.

	A	B1	B2	D	E	Shigella
A	0/16 = 0
B1	51/98 = 0.52 (2, 1–7)	4/12 = 0.33 (8, 2–13)
B2	24/182 = 0.13 (1, 1–4)	7/182 = 0.04 (1, 1–2)	23/76 = 0.30 (4, 1–11)
D	22/56 = 0.39 (1, 1–5)	22/56 = 0.39 (1, 1–3)	51/102 = 0.50 (2, 1–9)	5/6 = 0.83 (4, 2–8)
E	5/42 = 0.12 (1, 1–5)	6/42 = 0.14 (1, 1–3)	7/78 = 0.09 (1, 1–4)	4/24 = 0.17 (1.5, 1–2)	none possible
Shigella	33/132 = 0.25 (2, 1–5)	36/162 = 0.22 (1, 1–2)	19/264 = 0.07 (1, 1–3)	16/66 = 0.24 (1, 1–3)	9/44 = 0.20 (2, 1–6)	13/100 = 0.13 (1, 1–4)