Relative error from excitation temperature (T_ex) maps derived for EG (top), GA (middle), and MF (bottom), respectively. Black contours correspond to the continuum emission at 5σ, 10σ, 20σ, 30σ, 60σ, 90σ, 180σ, 220σ and 260σ with σ = 0.28 mJy beam⁻¹. The red cross indicates the continuum peak position. The red ellipses outlined in white show the location and size of the dust continuum core AG318−c9 as estimated by Coletta et al. (2025). The hatched ellipse shown on the bottom left corner represents the synthesised beam of the interferometer.