The file "tt_treesUM.tre" contains the sampled trees on a real time scale.
To analyse the trees you can use any program that reads and prints trees in the newick file format.
For example TreeView...
or FigTree to browse through the trees.
Or for example you can build differnet consensus trees with the program consense.exe from the Phylip-Package.
IMPRESSUM, 10 May 2009, Lin Himmelmann