Linear polarization profiles for ¹²CO (J = 2 → 1) (left) and (J = 1 → 0) (right). The top panels show Stokes I spectra at the peak position of ¹²CO emission in IC 443-G, i.e., at offsets (20′′, 60′′) from the map origin (, δ   (J2000) = + 22°39′36″), overlaid with fractional linear polarization levels p smoothed to 1.2 km s^-1 and 1.4 km s^-1, respectively. The dashed profiles are Stokes I at the original resolution of 0.2 km s^-1 and 0.4 km s^-1 for the higher and lower transitions, respectively. The corresponding polarization angles (χ) are plotted in the middle panel and the linear polarization () intensity profiles across the spectral line in the bottom. These spectra are corrected for instrumental polarization but not for positive bias due to noise.