1. Space Research Institute of the Russian Academy of Sciences, Moscow 117997, Russia
2. Scobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
3. Physics Department, Lomonosov Moscow State University, Moscow 119991, Russia
4. National Research University, “Higher School of Economics,” Moscow 101000, Russia
5. CNRS-Université d'Orléans-CNES, Orléans 45071, France
6. Max Planck Institute for Solar System Research, Göttingen 37077, Germany
7. Ludwig-Maximilian University of Munich, Munich 80539, Germany