Table 3
Overview of the observed PO 
transitions.
| Rms | |||||
| Ω | J′ − J | Λ | Line flux | noise | δν |
| (K km s-1) | (mK) | (MHz) | |||
|
|
|||||
| 1/2 | 5/2−3/2 | e | 29.191 | 1.7 | 2.0 |
| 1/2 | 5/2−3/2 | f | 32.046 | 1.7 | 2.0 |
| 3/2 | 5/2−3/2 | e | 0.030 | 2.1 | 2.0 |
| 3/2 | 5/2−3/2 | f | 0.030 | 2.1 | 2.0 |
| 1/2 | 7/2−5/2 | e | 33.269 | 1.7 | 2.0 |
| 1/2 | 7/2−5/2 | f | 27.782 | 1.7 | 2.0 |
| 3/2 | 7/2−5/2 | e | 1.622 | 2.0 | 2.0 |
| 3/2 | 7/2−5/2 | f | 1.622 | 2.0 | 2.0 |
|
|
|||||
| (Jy km s-1) | (mJy) | ||||
|
|
|||||
| 1/2 | 13/2−11/2 | e | 1.528 | 33.4 | 2.4 |
| 1/2 | 13/2−11/2 | f | 1.183 | 33.4 | 2.4 |
| 3/2 | 13/2 − 11/2 | e | 0.471 | 27.8 | 2.4 |
| 3/2 | 13/2−11/2 | f | 0.471 | 27.8 | 2.4 |
| 1/2 | 15/2−13/2 | e | 0.657 | 48.8 | 2.4 |
| 1/2 | 15/2 − 13/2 | f† | 0.133 | 48.8 | 2.4 |
| 3/2 | 15/2−13/2 | e | 0.196 | 50.6 | 2.4 |
| 3/2 | 15/2−13/2 | f | 0.196 | 50.6 | 2.4 |
Notes. The respective columns list the quantum number Ω, the rotational transition J′ − J, the Λ component, the velocity-integrated line flux, the rms noise, and the frequency resolution δν.
Component 1 (see Table 2) was not fitted in our analysis, because the noise was much higher owing to an optically thick line of terrestrial water at ~325 GHz. Instead, component 1 was assumed to have the same strength as component 6.
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