Integrated line intensities of atomic and molecular tracers computed over a 9.2–11.8 km s⁻¹ velocity range across the PDR as a function of right ascension offset at Δδ = 0. (Top) [C II], [C I], and H₂O (black, blue, and magenta, respectively). (Bottom) CO (2–1), C¹⁸O (2–1), CO (4–3), and H₂O (black, blue, red, and magenta, respectively). Line intensities have been normalized to their maxima toward the PDR, with the corresponding scaling factors as labeled. The data are shown at the native resolution of the images, with the corresponding FWHM beam sizes marked for each tracer. The size of the squares corresponds approximately to ±1σ H₂O observational uncertainties.