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Fig. 4

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Histogram of spectral type for the TBOSS sample observed with Herschel PACS. The full observed sample and the number of PACS blue channel (70/100 μm) detections and red channel (160 μm) detections are shown on the left. The Class II and Class III observed sample, and PACS blue and red detections are shown in the top and bottom plots on the right respectively.

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