1. Space Research Institute Austrian Academy of Sciences Graz Austria
2. Institute of Physics University of Graz Graz Austria
3. Institute of Geodesy Graz University of Technology Graz Austria
4. Conrad Observatory Zentralanstalt für Meteorologie und Geodynamik Vienna Austria
5. RAL Space Rutherford Appleton Laboratory Didcot UK
6. Department of Meteorology University of Reading Reading UK