Fig. 4From: Sunlight effects on the 3D polar current system determined from low Earth orbit measurementsCurrent systems for \(B_z < -1\) nT, Northern Hemisphere in sunlight and Southern Hemisphere in darkness. The format and scales are the same as in Fig. 1. The black bar and anti-sunward arrow in the vertical current plot shows the allowed locations for the sunlight terminator at the time when the measurements were done (approximately \(1.8\times 10^6\) samples)Back to article page