Overview of the first five PSP VGAs. The left column shows magnitude and components (in VSO coordinates) of the magnetic field timeseries data. The right column shows PSP’s trajectory (blue) in the XY_VSO plane with respect to Venus (Sun to the right) and the Martinecz et al. (2009) bow shock model (black). The best estimate times of boundary crossings are highlighted in the left column with vertical lines, and dots in the right column show PSP’s location at these times; red lines and dots correspond to bow shock crossings, purple to 1MB crossings, and orange shows ionopause crossings. The black dot in subplot b shows PSP’s location when the instruments turned off.