1. Johns Hopkins University Applied Physics Laboratory Laurel MD USA
2. Laboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USA
3. Southwest Research Institute San Antonio TX USA
4. Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX USA
5. Mullard Space Science Laboratory, Department of Space and Climate Physics University of College London London UK
6. School of Physics and Astronomy University of Southampton Southampton UK
7. Astronomy and Astrophysics Section Dublin Institute for Advanced Studies Dublin Ireland
8. Max Planck Institute for Solar System Research Göttingen Germany