1. Royal Belgian Institute for Space Aeronomy Brussels Belgium
2. Max Planck Institute for Solar System Research Göttingen Germany
3. Center for Mathematical Astrophysics KU Leuven Leuven Belgium
4. Swedish Institute for Space Physics Uppsala Sweden
5. Department of Physics and Technology University of Bergen Bergen Norway
6. Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China
7. State Key Laboratory of Space Weather Chinese Academy of Sciences Beijing China