Figure 2.

(a) The electron velocity vectors (V _e) observed by the four spacecraft projected onto the plane perpendicular to <Ω _e> that points to [0.99, −0.08, −0.13] in LMN at ~2234:01.9, 2.0, 2.1, 2.2, and 2.3 UT (red, green, cyan, blue, and magenta arrows), respectively; (b) d V _e = V _e $-\overline{{\mathbf{V}}_{\mathrm{e}}}$, where $\overline{{\mathbf{V}}_{\mathrm{e}}}$ is the four‐spacecraft tetrahedral‐averaged electron velocity at each of the five times; (c–f) the reduced electron distribution functions onto the (V_m, V_n) plane (left column) and (V⊥ ₁, V⊥ ₂) plane (right column) at ~2234:02.2 UT from top to bottom in the order of the distance of the spacecraft location from the current sheet (or along −n). Blue arrows point the meandering electrons that drift along −m or V⊥ ₂. Magenta arrows denote multilayered meandering populations that are most clearly observed at MMS3. FPI = Fast Plasma Instrument; MMS = Magnetospheric Multiscale.