1. West Department of Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave PropagationRAS Kaliningrad Russia
2. Institute of Solar Terrestrial PhysicsSB RAS Irkutsk Russia
3. Department of PhysicsUniversity of Oslo Oslo Norway
4. Arctic and Antarctic Research Institute Saint‐Petersburg Russia
5. JSC Scientific Research Institute for Long Distance Radiocommunication Moscow Russia
6. Space Research Institute of the Russian Academy of Science Moscow Russia
7. Fedorov Institute of Applied Geophysics Moscow Russia
8. University of Southampton Southampton UK
9. Johns Hopkins University Applied Physics Laboratory Laurel Maryland USA