Thermodynamical quantities along the BS of BD+43°3654. Left panel: thermodynamic variables in the RS as a function of θ. The temperature, magnetic field, density, and pressure are normalised to their values at the apex (θ = 0), while the tangential, perpendicular, and sound velocities are normalised to the stellar wind velocity. Right panel: density of the IL (dotted coral line) and HL (solid coral line) and temperature of the HL (blue solid line), all as a function of the angle θ; the variables are normalised to the un-shocked ISM values.