TRF solutions available here consist in sets of station positions and velocities with their variance/covariance matrices. Recently with the release of the ITRF2005 , Earth Orientation Parameters (EOPs) have simultaneously been combined with station coordinates. The numbers (yy) following the designation “ITRF” specify the last year when data was used during frame processing. For more details, please see part 4 of the IERS technical note n°32.