(a)–(d) MAVEN magnetic field observations on 2019 October 4 in MSO coordinates. The light brown crustal field is included for each component of the magnetic field traces, calculated from A. Morschhauser et al. (2014). The left dashed black line is the tail MPB crossing at 16:24 UTC. The right dashed black line is the dayside MPB crossing at 18:30 UTC. The dashed red line at 18:15 UTC marks the closest approach time. (e) MAVEN altitude throughout the orbit. (f) Trajectory of MAVEN in cylindrical coordinates with important time stamps marked.