Increase of R2 leads to the poleward shift of both the dayside cusp boundary and the night inner magnetosphere boundary. This shift at night is substantially more prominent, than in day time. The Dst and the PC indices of the magnetic field variations for the same storm are shown at the bottom. The location of the magnetic midnight in each station is marked by triangle. Figure 2 .
Arrows mark the latitudes of the eastward electrojet center.
Arrows mark the latitudes of the westward electrojet center. Figure 5 . For DMSP F08 and DMSP F10 passes with close to electrojets crosses UT and MLT the location of plasma domain boundaries according to Newell et al. Hourly mean Dst values correspond to UT of passes. Figure 6 .