xenTro9.phastCons11way.bw, xenTro9.phyloP11way.bw:

Generated by UCSC computational analysis group. The files are not yet
available for download from the official website of UCSC genome browser yet.
It is made available for use at xenbase.org. The 11-species alignment is
generated by aligning sequences of 10 other species against Xenopus
tropicalis 9.1 (xenTro9). The assemblies that were used in the alignment
include: 

Xenopus Tropicalis	xenTro9    
African Clawed Frog	xenLae2
Tibetan Frog		nanPar1                        
Painted turtle		chrPic2
Chicken			galGal5
Lizard			anoCar2
Opossum			monDom5
Dog			canFam3
Human			hg38
Mouse			mm10
Fugu			fr3

The two conservation score files are generated using the 11-way alignment.
The tree model that was used by the two programs is the following:
((((xenTro9:0.112377,xenLae2:0.12472):0.360011,nanPar1:0.509957):0.214173,(((chrPic2:0.180814,galGal5:0.306963):0.0662812,anoCar2:0.44181):0.0949849,(monDom5:0.29966,(canFam3:0.144678,(hg38:0.114543,mm10:0.297108):0.020248):0.21538):0.15883):0.235899):0.458203,fr3:0.458203);