Comparison between the NeQuick model and NTCM model with GPS-VTEC over the African low latitude Region

we present a preliminary comparison between GPS-VTEC measurements ,the NeQuick and NTCM modelling results over the african low latitude region. Using a combination of the above datasets together with NeQuick and NTCM calculations. we conduct a statistical annual analysis about the ionospheric behaviors during the enhancing phase of the current solar cycle 24, showing the average behavior and solar activity dependence of GPS , NeQuick and NTCM -derived TEC