* In each spectrum, <= 2 missing channels are filled by linear interpolation. In each spatial
plane, single missing pixels are filled by linear interpolation, first in l direction, then b.
This is one of about a dozen relatively small surveys carried out to search for molecular clouds predicted by the infrared analysis of DHT2001 (shaded
purple in Fig. 1; see Section 3.1.4). In nearly all cases molecular gas was detected.
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