Magnetic configurations in the low corona and the connectivity results using the magnetic field vector data from MAS 3D MHD data cubes. Panel a: magnetic field configurations in the low corona from the MAS MHD model. Plotted are open (blue) and closed (red) field lines traced using the magnetic field vector data from the MAS 3D cubes. Panels b, c: field lines of magnetic connectivity between the Sun and the spacecraft estimated from the traced field lines and the location of the footpoints of the connected IMF lines from the nominal Parker spiral (panel b) or the ENLIL model (panel c). The Sun is represented to scale by the radial magnetic field at the solar surface from the MAS data.