1. Department of Physics and Astronomy Dartmouth College Hanover NH USA
2. Department of Physics and Technology University of Bergen Bergen Norway
3. Southwest Research Institute San Antonio TX USA
4. Department of Astronomy and Center for Space Physics Boston University Boston MA USA
5. Cooperative Programs for the Advancement of Earth System Science University Corporation for Atmospheric Research Boulder CO USA
6. Center for Space Plasma and Aeronomic Research University of Alabama in Huntsville Huntsville AL USA