1. Department of Physics Lancaster University
2. Department of Physics and Astronomy University of Leicester Leicester UK
3. Laboratoire de Physique Atmosphérique et Planétaire, Space sciences, Technologies and Astrophysics Research (STAR) Institute Université de Liège Liège Belgium
4. National Institute of Information and Communications Technology Koganei Japan
5. Department of Geophysics Tohoku University Sendai Japan
6. Blackett Laboratory Imperial College London London UK
7. Science Department Central Arizona College Coolidge AZ USA