Fig. 4From: Space weather impacts on the ionosphere over the southern African mid-latitude regiona and b are the variation of TEC from GPS, ionosonde, and AfriTEC models for Hermanus and Grahamstown, respectively, for the period 3–8 Nov 2021. The vertical dashed lines correspond to the time of the GUVI overpasses at 7:56, 7:46, 7:36, 7:26, 7:16, and 7:07 UT on 3–8 Nov 2021, respectivelyBack to article page