Table 1.

Number of 4-fold Degenerate Synonymous Sites and Total Mutations at Those Sites for the Clades Analyzed Here.

Clade	Four-fold Degenerate Sites	Total Mutations at These Sites
20A	4,247	17,202
20B	4,247	14,121
20C	4,246	9,344
20E	4,246	10,454
20G	4,243	14,019
20I	4,243	60,858
21C	4,245	6,308
21I	4,241	24,117
21J	4,239	282,051
21K	4,241	113,721
21L	4,235	83,475
22A	4,236	11,413
22B	4,234	64,765
22C	4,233	18,958

Note.—We only analyzed clades with at least 5,000 mutations at 4-fold degenerate sites.