Table 1.

Incorporating rate variation in the maximum likelihood estimation using the same set of data in Hao and Golding (2006).

Rate	Gamma Distribution			Constant Rate		ΔLnL
	α value	MLE	LnL	MLE	LnL
μ1 = μ2 = μ3	0.37	5.29	-39765	0.51	-40277	512
μ1	5.83	4.73	-36874	4.42	-36902	28
μ2 = μ3		0.37		0.35
μ1	3.04	4.49	-36042	3.92	-36128	86
μ2		0.32		0.28
μ3		1.67		1.23