Table 2.

Empirical Nucleotide Transition Matrices.

	A	T	C	G
Four-fold degenerate sites
A	0.9905	0.0033	0.0020	0.0043
T	0.0033	0.9903	0.0043	0.0021
C	0.0078	0.0154	0.9717	0.0051
G	0.0141	0.0062	0.0043	0.9754
Intergenic regions
A	0.9947	0.0028	0.0007	0.0019
T	0.0028	0.9945	0.0020	0.0007
C	0.0042	0.0084	0.9853	0.0020
G	0.0085	0.0042	0.0021	0.9852