Fig. 4From: Local time and longitudinal variation of the ionospheric radial current: swarm observations and TIE–GCM simulationsSimilar to Fig. 3, but for dusk IRC. Larger normalized IRC in a–c represent stronger outward currents. Positive values in d–f represent outward currents. The correlation coefficients between model outputs and observations are given for each season. Arrows (double arrows) represent the direction in which the inward or outward current becomes stronger or weakerBack to article page