1. Introduction  
2. Observations and Data Reduction  
2.1. CO \( J{=}3{-}2 \) Map  
2.2. R and Hα Images  
2.3. Ancillary Data  
2.4. CO \( J=1-0 \) and \( J=2-1 \) Maps  
2.5. Convolution Kernels  
3. Detailed Analysis of CO Emission Regions  
3.1. CO Regions  
3.2. Randomly Selected Regions  
4. Analysis of Candidate PDRs  
5. Line Ratios  
6. Concluding Remarks