Top panel: atomic gas surface density map derived from the HI data (Adams & Oosterloo 2018). The black-dashed circle marks the ACA CO(1–0) data FoV. Each square marks a cloud detection region: north (red), west (green), and south (blue). The old and younger stellar population distributions are shown with red and light blue circles (corresponding to their respective half-light radii of 145 pc and 102 pc de Jong et al. 2008). Bottom nine subpanels: zoomed-in images of the ACA CO emission maps (MOM0), velocity fields (MOM1), and spectra of the three CO clouds identified in this work. The spectra are taken within the apertures shown by the green dashed circles in the MOM0 panels (i.e., r_CO in Table C.1). The CO and HI spectra are in heliocentric frame (rightmost subpanels). The beam sizes are the white ellipses.