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Fig. B.1

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Maps of the beam dilution factor across the Orion KL region determined by population diagram analysis of the observed lines of CH3CN J = 6K−5K, J = 12K−11K, J = 13K−12K, and J = 14K−13K at each map position (see Sect. 4.3 for details). A dilution factor of 0.1 corresponds to a source size of 7 for the J = 6K − 5K map and ~3 for the other maps. The locations of the various sources are indicated as in previous figures.

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