LESIA, Observatoire de Paris, CNRS, 5, place Jules Janssen, MEUDON, 92195, France; Institute of Atmospheric Physics, AS CR, Bocni II 1401, Prague, 141 31, Czech Republic
Astronomical Institute, AS CR, Bocni II 1401/1a, Prague, 14131, Czech Republic; Institute of Atmospheric Physics, AS CR, Bocni II 1401, Prague, 141 31, Czech Republic
LESIA, Observatoire de Paris, CNRS, 5, place Jules Janssen, MEUDON, 92195, France
Max Planck Institute for Solar System Research, Max-Planck-Str. 2, Katlenburg- Lindau, 37191, Germany
Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, RH5 6NT, United Kingdom
Department of Physics, West Virginia University, 209 Hodges Hall, Morgantown, 26506-6315, USA