1. Space Science Institute, School of Astronautics; Beihang University; Beijing China
2. State Key Laboratory for Space Weather, CSSAR; Chinese Academy of Sciences; Beijing China
3. CAS Key Laboratory of Geospace Environment; University of Science and Technology of China; Hefei China
4. Space Research Institute; Austrian Academy of Sciences; Graz Austria
5. Institut de Recherche en Astrophysique et Planétologie; CNRS; Toulouse France
6. IRAP, UPS; University of Toulouse; Toulouse France