Fig. 5
Excitation diagrams of CO, H2O and OH (from top to bottom panels) at the southeast (SE), on-source (OS) and northwest positions (NW), respectively (left to right panels). Derived temperatures and column densities are reported in the top-left corner of each panel. Filled (red) circles in the CO panels correspond to blended lines that were not taken into account in the linear fits. Filled (green) circles in the on-source H2O diagram correspond to para-lines.
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