[Genome] Branch length of phylogenetic tree

[Thomas Sandmann]

Dear UCSC browser team,

I would like to ask a question about the "conservation track", more  
specifically about the one calculated and displayed for insects on

http://genome.ucsc.edu/cgi-bin/hgTrackUi? 
hgsid=83959973&c=chr2L&g=multiz15way

The phylogenetic relationships between the species are displayed as a  
tree image as well as the "formal hierarchy" at the bottom of the page.
Do you by any chance have information about the branch length of this  
phylogenetic tree, too (e.g. as a result of phastcons evaluation of  
the multiple alignment) ?

That would help me a lot !
Thanks, Thomas