Open Access
Table D.1
Percentage of pixels of each intensity ratio in the model validity range of B21.
| Model | W1/W2 | Ntot | Nval/Ntot[%] |
| Dense gas | 12CN/N2H+ | 12129 | 94.5 |
| 13CO/HCO+ | 20218 | 99.5 | |
| C18O/HCO+ | 20218 | 99.2 | |
| Translucent gas | C2H/HNC | 52674 | 100 |
| C2H/HCN | 79839 | 99 | |
| C2H/CN | 46415 | 91 |
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