GMCs in NGC0628. CO-identified GMCs using CPROPS are shown as red ellipses (Hughes et al., in prep.), and the 7.7 μm identified PAH clouds using SCIMES are shown in the background in different colors. A zoomed-in view of the central region is shown in the inset (upper right corner); it focuses on the structures identified by both PAH and CO. This image highlights the resolution advantage of PAH clouds and the better sensitivity compared to CO, which allows the detection of fainter and smaller clouds where CO is not detected.