1. Korea Astronomy and Space Science Institute Daejeon South Korea
2. Faculty of Mathematics and Physics Charles University Prague Czech Republic
3. Department of Earth and Space Sciences Southern University of Science and Technology Shenzhen China
4. Department of Physics and Astronomy Dartmouth College Hanover NH USA
5. NASA/GSFC Greenbelt MD USA
6. Goddard Planetary Heliophysics Institute University of Maryland, Baltimore County Catonsville MD USA