Table 2
Mean, minimum, and maximum values for column density and the different intensities and intensity ratios integrated over the main velocity component and averaged perpendicular to the observed strip.
| Ratio | Mean | Minimum | Maximum |
|---|---|---|---|
| 13CO 2−1/CO 2−1 | 0.085 | 0.027 | 0.182 |
| C18O 2−1/CO 2−1 | 0.0014 | 0 | 0.0059 |
| [C I] 1−0/CO 2−1 | 0.28 | 0.23 | 0.33 |
| [C II]/CO 2−1(a) | 0 | 0.035 | |
| 13CO 1−0/CO 2−1 | 0.15 | 0.05 | 0.24 |
| CO 1−0/CO 2−1 | 1.25 | 1.10 | 1.55 |
| Ratio (K km s−1/(1021 cm−2)) | |||
| CO 2−1/NH | 2.1 | 1.5 | 2.7 |
| 13CO 2−1/NH | 0.19 | 0.05 | 0.40 |
| C18O 2−1/NH | 0.0034 | 0 | 0.013 |
| [C I] 1−0/NH | 0.57 | 0.41 | 0.74 |
| [C II]/NH | 0 | 0.059 | |
| 13CO 1−0/NH | 0.32 | 0.09 | 0.54 |
| CO 1−0/NH | 2.6 | 2.1 | 3.2 |
| Values | |||
| NH (1021 cm−2) | 4.9 | 3.5 | 6.5 |
| CO 2−1 (K km s−1) | 10.3 | 5.7 | 15.5 |
Notes. The last three lines of each ratio are not obtained at the same telescope resolution, so that they are only valid if the emission is extended. (a)As discussed in Sect. 3, we used the [C II] data for the low-column-density end of our strip.
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