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Table 1
Properties of cold clouds.
| NHIE | HISA | Planck CC | IRDC | |
|
|
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| Complex size (pc) | ~50 | 10−110 | <20 | <30 |
| Cloud size (pc) | 0.3−4.1 | 0.029−3.6 | 0.2−2.4 | 0.4−1.0 |
| Temperature (K) | 12−47 | 6−45 | 7−21 | 8−28 |
| Column density (× 1020 cm-2) | 2.5 | 1.0−6.9 | 8−160 | 50−200 |
| Number density (cm-3) | 150−320 | 42−550 | 5 × 103−105 | 5 × 105−3 × 106 |
| Mass (M⊙) | 0.235−1.07 | 5−48 | 0.4−1800 | 23−300 |
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