Circular polarization profiles for ¹²CO (J = 2 → 1) (left) and (J = 1 → 0) (right). The Stokes I spectra at offsets (20′′, 60′′) from the map origin (, δ   (J2000) = + 22°39′36″) overlaid with the fractional circular polarization levels are shown in the top panels and the Stokes V spectra corresponding to the Stokes I profiles are shown in the bottom panels. These spectra are corrected for instrumental polarization.