1. Institute of Solar-Terrestrial Physics SB RAS, Irkutsk 664033, Russia
2. Institute of Astronomy, Russian Academy of Sciences, Moscow 119017, Russia
3. Ulugh Beg Astronomical Institute UzAS, Tashkent 100052, Uzbekistan
4. Department of Astronomy and Astrophysics, Physics Faculty, National University of Uzbekistan, Tashkent 100174, Uzbekistan