GPS TEC variations under quiet and disturbed geomagnetic conditions during the descending phase of 24th solar cycle over the Indian equatorial and low latitude regions

• Quiet time seasonal trend in TEC is not seen during disturbed periods of low solar activity. difference between and quiet higher the moderate The correlation day maximum with F 10.7 found to be reduced periods. present study focused understand geomagnetic storm effects on short- long-term variations ionospheric Total Electron Content (TEC) over equatorial latitude sectors. GPS-TEC observations a near station Bangalore stations Waltair Hyderabad declining phase 24th cycle (2015–2019) analysed. conditions are individually analysed diurnal, activity variations. following equinoctial summer minimum But, periods, dependence different than that time. times conditions. months Further, analysis cm flux carried out for three locations. It compared more at equator latitudes.