When RTK corrections are turned on / enabled, does the P4-RTK store the data for those corrections anywhere?  I'm specifically interested in the baseline distance to the Virtual Reference Station (VRS) that the RTK network creates.  I've looked in the rinex.obs and the timestamp.mrk files, and don't see any reference there.  

As far as I know the only file saved is RINEX.

Thanks @Skyveyor112.  Have you found the VRS baseline in that file when using RTK?  I don't see it, but I may have just overlooked it.