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Fig. 4.
Correlation between CO line flux and continuum intensities. Top panel: CO J = 15 − 14 vs. IRAS 100 μm flux. Middle panel: CO J = 15 − 14 vs. PACS 170 μm continuum flux. Bottom panel: continuum normalised CO J = 15 − 14 flux vs. IRAS [12]–[25] colour. The symbols and colours are the same as in Fig. 1.
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