1. Department of Physics and Astronomy; University of Leicester; Leicester UK
2. Department of Physics and Astronomy; University College London; London UK
3. Center for Space Physics; Boston University; Boston Massachusetts USA
4. Goddard Space Flight Center; NASA; Greenbelt Maryland USA
5. Institute of Space and Astronautical Science; JAXA; Sagamihara Japan
6. Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
7. Aerospace Engineering Sciences; University of Colorado Boulder; Boulder Colorado USA