1. Leicester Institute for Space and Earth Observation, Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
2. Airbus, Gunnels Wood Road, Stevenage SG1 2AS, UK
3. Citizen Scientist
4. Mullard Space Science Laboratory, Department of Space and Climate Physics, University College London, Holmbury St Mary RH5 6NT, UK
5. Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
6. School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK