1. Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics; Shandong University; Weihai China
2. Sate Key Laboratory of Space Weather; Chinese Academy of Sciences; Beijing China
3. School of Earth and Space Sciences; Peking University; Beijing China
4. Space Science Institute, School of Astronautics; Beihang University; Beijing China
5. Geodetic and Geophysical Institute, Research Centre for Astronomy and Earth Sciences; Hungarian Academy of Sciences; Sopron Hungary