Parameters related to electron pitch-angle distribution characteristics, including (a) x-component of magnetic field, (b) the curvature radius of magnetic field line, (c) electron cyclotron radius of electrons of 6.52–35 eV and 35–8600 eV, (d) the improved adiabatic parameter (1/κ ²; ratio of the curvature radius of magnetic field line to electron cyclotron radius) of electrons of 6.52–35 eV and 35–8600 eV, (e) pitch-angle distribution of electrons of 6.52–35 eV, (e) pitch-angle distribution of electrons of 35–8600 eV. The dashed lines and light gray shaded area mark the duration of the spacecraft in the center of the current sheet. The dashed lines and light blue shaded area, same as that in Figure 1, mark the duration of the spacecraft in the current sheet.