Computation of a homogeneous coordinate time series for European GPS   stations by reprocessing of the weekly EPN solutions
  Weekly coordinate time series for the all EPN (European Permanent GPS Network) stations for the period of observations beginning from GPS week 834 was obtained by a reprocessing of the official EPN solutions. Comparison of this series with EPN Central Bureau (EPN CB) and the previous IAA two-year solution for selected EPN stations obtained by reprocessing of the original observations is performed. Results of comparison show that new solution based on fiducial-free strategy is most likely free of seasonal errors. Now the new IAA EPN solution is being computed regularly (on availability of the official EPN solution) and is available to any interested group. 
Natalia Panafidina, Zinovy Malkin