Engineering Physics Program and Astronomy Department Charlottesville, VA 22903, USA, Thornton Hall B103 University of Virginia, Charlottesville, VA 22904, USA
Raytheon Technical Services Company, SSDOO Project, Space Physics Data Facility, Code 632, NASA Goddard Space Flight Center, Greenbely, MD 20771, USA
Institute of Astronomy RAS, 48 Pyatnitskaya str., Moscow, 119017 Russian Federation
Jet Propulsion Laboratory, California Institute of Technology, Pasedena, CA 91109, USA
Jet Propulsion Laboratory, California Institute of Technology, Pasedena, CA 91109, USA
Service d'Aeronomie du CNRS, B.P. No. 3, Verri_eres-Le-Buisso, 91371 France
Atmospheric, Oceanic, and Space Sciences, Space Research Building, University of Michigan, Ann Arbor, MI 49441, USA