Fig. 7From: Analysis of ionospheric storm-time effects over the East African sector during the 17 March 2013 and 2015 geomagnetic stormsGlobal map of thermospheric [O]/[\(\text {N}_2\)] from the Global Ultraviolet Imager (GUVI) experiment flown on the TIMED satellite for the period between 16 and 18 March 2013. Data gaps are represented by the white spaces in each panelBack to article page