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Fig. 18

image

As in Fig. 17 but using the average surface brightness in three temperature intervals that are determined with SPIRE data and a fixed value of the spectral index, β = 1.8. The blue, green, and red symbols correspond to (14 ± 0.5) K, (16 ± 0.5) K, and (18 ± 0.5) K, respectively. Each point corresponds to one field. The black lines connect the median values of the three temperature samples.

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