Fig. 2
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Observed CO J = 1–0 spectra (black line) and 2–1 profiles (red line) toward the Galactic edge clouds. The CO lines were extracted from the CO(1–0) emission peaks. The CO(2–1) line cubes have been smoothed to match the resolution of the CO(1–0) line, 52′′, for comparison. Refer to Fig. B.1 for the observed spectral profiles of other targets.
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