a, b) Background color image shows the inclination angle γ_He inferred from the He i inversions. Superimposed black (blue) arrows indicate the helium (silicon) horizontal fields in the local frame of reference. The white contour along the y-axis encloses horizontal fields according to the criterion of inclinations between 75° < γ_He < 105°. c, e) Histogram densities of the inferred azimuth differences between helium and silicon, φ_He − φ_Si, only for the arrows that are enclosed within the white contour in the a) and b) panels. d) Most common azimuth configurations between helium and silicon above y ~ 8 and y ~ 12, for July 3 and 5 respectively.