V.N. Obridko - Dr.Sc. (Med.), Professor, Institute of Terrestrial Magnetism (Moscow). E-mail obridko@izmiran.ru
M.V. Ragulskaya - Ph.D. (Phis-Math), Senior Research Scientist, Institute of Terrestrial Magnetism. E-mail: ra_mary@mail.ru
E.A. Rudenchik - Ph.D. (Phis-Math), Institute of Terrestrial Magnetism. E-mail: ruden_ea@mail.ru
O.V. Khabarova - Ph.D. (Phis-Math), Senior Research Scientist, Institute of Terrestrial Magnetism. E-mail: olik3110@list.ru
E.G. Hramova - Senior Engineer, Institute of Terrestrial Magnetism. E-mail sinop@yandex.ru