1. Center for Atmospheric Research; National Space Research and Development Agency; Abuja Nigeria
2. Institute for Space-Earth Environmental Research; Nagoya University; Nagoya Japan
3. Department of Physics; University of Lagos; Lagos Nigeria
4. Department of Physics; Tai Solarin University of Education; Ijebu_Ode Nigeria
5. Department of Physics; University of Port Harcourt; Port Harcourt Nigeria
6. Department of Mathematical and Physical Sciences; Afe Babalola University; Ado Ekiti Nigeria