1. Vanderbilt Dyer Observatory, Department of Physics and Astronomy; Vanderbilt University; Nashville, Brentwood USA
2. Harpeth Hall School, Department of Physics and Astronomy; Vanderbilt University; Nashville Tennessee USA
3. Heliophysics Science Division; NASA Goddard Space Flight Center; Greenbelt Maryland USA
4. NASA Headquarters; Washington D.C. USA
5. Centre d'Etude des Environnements Terrestre et Planétaires; Observatoire de Saint-Maur, CNRS, IPSL; St. Maur France