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Table D.1
Summary of gas observations.
| Atom or | Quantum | Frequency | Upper level | Observing |
| Molecule | Numbers | (GHz) | Energy (K) | Facility |
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|
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| H2 | J = 2−0, S(2) | 244 × 106 | 1682 | ISO-CAM CVF |
| J = 3−1, S(3) | 310 × 106 | 2503 | ISO-CAM CVF | |
| J = 5−3, S(5) | 433 × 106 | 4586 | ISO-CAM CVF | |
| O | J = 1−2 | 4744 | 228 | Herschel-PACS |
| J = 0−1 | 2010 | 326 | Herschel-PACS | |
| CH+ | J = 2−1 | 1669 | 153 | Herschel-HIFI |
| NH3 | J = 1−0,K = 0−0 | 572 | 27 | Odin, Herschel-HIFI |
| H2O | J = 1−1,Ka = 1−0,Kc = 0−1 | 556 | 37 | Odin, Herschel-HIFI |
| J = 2−1,Ka = 1−0,Kc = 2−1 | 1669 | 114 | Herschel-PACS, Herschel-HIFI | |
| C2H | J = 17/2−15/2, N = 9−8 | 785 | 208 | Herschel-HIFI |
| J = 19/2−17/2, N = 9−8 | 785 | 208 | Herschel-HIFI | |
| 13C16O | J = 7−6 | 771 | 148 | Herschel-HIFI |
| 12C17O | J = 7−6 | 786 | 151 | Herschel-HIFI |
| N2H+ | J = 3−2 | 279 | 28 | APEX |
| J = 6−5 | 558 | 94 | Herschel-HIFI | |
| O2 | J = 1−1,N = 1−0 | 118 | 6 | Odin |
| J = 3−1,N = 3−2 | 487 | 26 | Herschel-HIFI | |
| J = 5−3,N = 4−4 | 773 | 61 | Herschel-HIFI | |
| 12C32S | J = 2−1 | 97 | 7 | SEST |
| J = 3−2 | 146 | 14 | SEST | |
| J = 5−4 | 244 | 35 | SEST | |
| J = 10−9 | 489 | 129 | Herschel-HIFI | |
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