VLA₁ map at λ 6.2 cm of NGC 4631 with apparent magnetic field orientation. Contours represent the total radio intensity and the colorscale shows the polarized emission in μJy/beam. The length of the vectors is proportional to the polarized intensity (1″ Ӕ 8.3μJy/beam). The half-power beam width is and the rms noise (σ) is 26   μJy/beam. Contour levels are given by σ·( − 3,3,6,12,24,48,96,192,384). Primary beam correction was applied.