1Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN), Moscow, Russia, 2)Istituto Nazionale di Geofisica e Vulcanologia (INGV), Rome, Italy
1Istituto Nazionale di Geofisica e Vulcanologia(INGV), Rome, Italy, 2Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN), Moscow, Russia
1MBARARA UNIVERSITY OF SCIENCE AND TECHNOLOGY, MBARARA, UGANDA, Mbarara, Uganda, 2South African National Space Agency (SANSA) Space Science, 7200 Hermanus, South Africa, Hermanus, South Africa