Magnetic connectivity to solar source. Top: in situ plasma parameters; Solar Orbiter solar wind speed, V_sw (in km s⁻¹); v-b correlation coefficient, ρ_vb; proton density (in cm⁻³); radial magnetic field magnitude, B (in nT). Bottom – Source maps: PFSS B² contour maps and solar wind magnetic foot-points along the Solar Orbiter trajectory for the time intervals a-d selected in the upper panel. The projection of Solar Orbiter location (orange square) on the source surface (orange crosses) and down to the solar wind source region (orange circles) calculated for the height R = 1.16 R_⊙ and measured in situ solar wind speed ± 80 km s⁻¹ in bins of 10 km s⁻¹. Open magnetic field regions shown in blue (negative) and green (positive), the neutral line is in black bold.