Frantisek Nemec¹, George B Hospodarsky², Ondrej Santolik³, Andrei G Demekhov⁴, Dmitry Pasmanik⁴, Barbora Bezdekova¹, Mykhaylo Hayosh⁵, Alexander Tomori⁶, William S Kurth² and David Hartley⁷, (1)Charles University, Prague, 180, Czech Republic, (2)University of Iowa, Department of Physics and Astronomy, Iowa City, IA, United States, (3)IAP Prague, Praha 4, Czech Republic, (4)Institute of Applied Physics RAS, Nizhny Novgorod, Russia, (5)Institute of Atmospheric Physics, Prague 4, Czech Republic, (6)Institute of Atmospheric Physics ACSR, Praha 4, Czech Republic, (7)University of Iowa, Iowa City, IA, United States