Left: histogram of the absolute difference, |δ|, between the position angles of magnetic field and intensity gradient in the range from 0° to 90°. Right: |δ| map toward Hub-N (color scale) overlaid on the 350 μm dust emission. Contour levels range from 2σ to 10σ in steps of 2σ and from 10σ to 100σ in steps of 10σ, where σ is the rms noise of the map (~80 mJy beam⁻¹). The green star and the green solid line depict the MM1a core position and the spine of the filament, respectively, similar to Fig. 6.