V.A. Kovalev - Ph. D. (Phys.-Math.), Senior Research Scientist, Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation of RAS I.G. Kostuchenko - Ph. D. (Phys.-Math.), Senior Research Scientist, Karpov Institute of Physical Chemistry M.I. Savchenko - Ph. D. (Phys.-Math.), Senior Research Scientist, Ioffe Physical-Technical Institute (St Petersburg) Y.E. Charikov - Ph. D. (Phys.-Math.), Senior Research Scientist, Ioffe Physical-Technical Institute (St Petersburg)