Integrated CO (J = 1–0) emission intensity (Kkm s⁻¹) toward SNR G150.3+4.5 at 115 GHz using CO composite survey (Dame et al. 2001). Panel left: integrated on the whole velocity range [−9.8, +2.4] km s⁻¹, and overlaid with the radio shell structure extracted from Urumqi λ6cm results (Gao & Han 2014). Panel right: integrated on [−9.8, −3.8] km s⁻¹ while overlaid with the GeV emission contour line generated from the top right panel in Fig. 1. Other labels are same as above.