1. Institute of Space Physics and Applied Technology; Peking University; Beijing China
2. School of Space Science and Physics; Shandong University at Weihai; Weihai China
3. NASA Goddard Space Flight Center; Greenbelt Maryland USA
4. Key Laboratory for Space Weather, Center for Space Science and Applied Research; Chinese Academy of Sciences; Beijing China
5. Mullard Space Science Laboratory; Dorking UK
6. CESR, UPS; University of Toulouse; Toulouse France
7. UMR 5187; CNRS; Toulouse France
8. Space and Atmospheric Physics Group, Blackett Laboratory; Imperial College; London UK