MMS overview plots of the four similar cases. ((a), (f), (k), (p)) X , y, z-components, and magnitude of magnetic field. ((b), (g), (l), (q)) The curvature radius of magnetic field line. ((c), (h), (m), (r)) Electron cyclotron radius of low-energy electrons and high-energy electrons, respectively, in the four cases. ((d), (i), (n), (s)) The improved adiabatic parameter 1/κ 2 of low-energy electrons and high-energy electrons, respectively. ((e), (j), (o), (t)) Electron PAD of high-energy electrons.