Quiet-Sun profile and Stokes profiles retrieved from the positions P i to P iv marked in Fig. 4. The columns show Stokes I with the two Fe i 630 nm lines and two telluric oxygen lines normalized to an averaged quiet-Sun Stokes I continuum to demonstrate the continuum intensity differences and Stokes Q, U and V profiles normalized to the local Stokes I continuum to show the differences in scales between the polarization signals. The wavelength scale is given in Δ λ from the Fe i 630.15 nm rest wavelength position. The full-width at half-maximum is given for the Fe i 630.15 nm line. The red curve overplotted on the profiles located at P I denotes synthesized profiles fitted to the observations by the inversion code. The magnetic and velocity field values at log (τ_500   nm = -1) corresponding to this fit are B = 2.1 kG with an inclination angle of γ = 25 ° and a velocity of v_LOS = −1.5 km s^-1.