Fig. 3: Overview of Observations by MMS on 23 February, 2016.
From: Observational features of charge distribution in Earth’s inner magnetosphere

Overview of field and charge from MMS on 23 February 2016. a magnetic field intensity B at the center of the constellation, which is the average of the magnetic fields measured by the four spacecraft of MMS; b charge density\(\rho\) distribution; c electric field E at the center of the constellation, which is the average of the electric fields measured by the four spacecraft of MMS; d parallel electric field \({{{{{{\rm{E}}}}}}}_{//}\); e, f the spacecraft positions.