Table 4. Estimated nucleotide substitution rates of complete genomes for each gene.

Gene	No. of sequences used	The clock modela	Mean rateb	95% HPD interval
Complete	200	UCLD	2.85 × 10−4	2.23 × 10−4 to 3.64 × 10−4
NS1	200	UCLD	1.96 × 10−4	1.46 × 10−4 to 2.56 × 10−4
NS2	200	UCLD	3.92 × 10−4	2.50 × 10−4 to 5.44 × 10−4
VP1	200	UCLD	2.47 × 10−4	1.77 × 10−4 to 3.33 × 10−4
VP2	277	UCLD	2.95 × 10−4	2.32 × 10−4 to 3.69 × 10−4

UCLD, uncorrelated relaxed clock model; HPD, highest posterior density.

^aUCLD with an underlying lognormal distribution. ^bThe geometric mean nucleotide substitution rate (substitutions/site/year).