The University of Iowa, Department of Physics and Astronomy, Iowa City, IA 52242, USA
The University of Iowa, Department of Physics and Astronomy, Iowa City, IA 52242, USA
University of Maryland, Institute for Physical Science and Technology, College Park, MD 20742, USA
Charles University, Faculty of Mathematics and Physics, Prague, CZ-18000, Czech Republic; Institute of Atmospheric Physics, Czech Academy of Sciences, Prague, 14133, Czech Republic
Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20707, USA
The University of Iowa, Department of Physics and Astronomy, Iowa City, IA 52242, USA
University College London, Mullard Space Science Laboratory, Dorking Surrey, RH5 6NT, United Kingdom