All data sets used within this study are from 2019 March 31 at 00:00 UT to 2019 April 5 at 23:59 UT. Top panel: the original magnetic field components measured by FIELDS in (R,T,N) coordinates (not scaled), along with the total magnetic field intensity (gray line), all in nanotesla. Second panel: the proton speed measured by SWEAP/SPC (brown) (not scaled) along with the electron density (FIELDS/RFS(QTN)), scaled to the perihelion distance at 36.5 R_⊙. Third panel: original proton and electron densities in particles per cm⁻³, along with original electron core temperature and proton temperature (not scaled and deduced from proton thermal speed). Bottom panel: the heliocentric radial distance of the spacecraft as a function of time.