Diversification across an altitudinal gradient in the Tiny Greenbul (Phyllastrephus debilis) from the Eastern Arc Mountains of Africa

Table 3 Estimates of the Isolation with Migration model using IMa.

	RABAI-ALBIGULA	RABAI-ALBIGULAKANGA EXCLUDED	DEBILIS-RABAI	ALBIGULA_NGURU-ALBIGULA_USAMBARA
Θ₁	7.019 (4.870-9.659)	6.531 (4.452-9.194)	3.266 (1.594-4.9398)	1.0913 (0.465-1.705)
Θ₂	2.426 (1.480-3.632)	2.402 (1.502-3.556)	8.355 (5.881-10.742)	1.409 (0.584-2.194)
Θ_A	21.321 (1.587- 52.328)	25.909 (1.344-51.185)	21.068 (0.0261-44.8762)	8.6927 (0.009-16.221)
M₁₂	0.109 (0.025-0.245)	0.0535 (0.005-0.145)	0.2735 (0.005-0.605)	2.8637 (0.355-5.305)
M₂₁	0.123 (0.015-0.345)	0.093 (0.005-0.195)	0.186 (0.005-0.365)	1.113 (0.005-2.465)
T	2.4	2.2	0.6	0.3

Values represent the mean of the distribution and the 90% HPD confidence interval.
The posterior distribution of the parameter T possesses a non-zero probability distribution when T increases; the value represents the highest posterior estimate. For this reason we do not discuss the T value from the Isolation with Migration analyses in the text. The estimates for the T parameters are given in million years before present.

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