Fig. 5
Sample fit of the line ratios of the central pixel (0.4 × 0.4 kpc2) with a single PDR model. The points with error bars represent the line ratios of the specified species from the synthetic maps. The dashed curves correspond to the line ratios of the best fit PDR model. All the ratios are normalized to CO(1−0) except for the red ratios which are normalized to 13CO (1−0).
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