Table 1.

Descriptive statistics of subset alignments and trees

	L14 AT content		L8 AT content		L9 AT content		Tree length
	Mean	S.D.	Mean	S.D.	Mean	S.D.	Mean	Variance
whole dataset	0.5118	0.0819	0.4686	0.0675	0.5221	0.0745
most_chars	0.5614	0.0750	0.5175	0.0740	0.5593	0.0600	3.837	0.0500
least_bias	0.5266	0.0570	0.4845	0.0524	0.5206	0.0461	3.489	0.0374
slowest_rate	0.5182	0.0692	0.4860	0.0678	0.5334	0.0503	3.033	0.0375

Each row shows a set of statistics associated with a given subset of the data, or with the entire dataset. Each row shows the mean and Standard Deviation of AT content for each gene separately, and the mean and variance of the total tree length as reported by MrBayes.