Table 2. Log Bayes factors between isochronous and heterochronous models for each data set, separated by prior on effective population size, θ.

Species; Clock Model	Exponential	Gamma	Log-normal
Vibrio cholerae; Strict Clock	355.18	379.63	382.10
Vibrio cholerae; Relaxed Clock	208.97	439.63	219.60
Powassan virus (POWV); Strict Clock	-80.63	32.67	50.29
Powassan virus (POWV); Relaxed Clock	-221.94	18.79	27.23
Treponema pallidum; Strict Clock	105.80	2.17	1.85
Treponema pallidum; Relaxed Clock	-34.37	-1474.14	-34.04