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Table 1
Observed H2CO transition parameters.
| Transition | Frequency | Eu | Receiver | Beam size |
|---|---|---|---|---|
| GHz | K | arcsec | ||
| o-H2CO 313–212 | 211.212 | 32.06 | PI230 | 29.5 |
| p-H2CO 303–202 | 218.222 | 20.96 | PI230 | 28.6 |
| p-H2CO 322–221 | 218.476 | 68.09 | PI230 | 28.6 |
| p-H2CO 321–220 | 218.760 | 68.11 | PI230 | 28.5 |
| o-H2CO 312–211 | 225.699 | 33.45 | PI230 | 27.6 |
| p-H2CO 404–303 | 290.623 | 34.90 | FLASH | 21.5 |
| p-H2CO 423–322 | 291.238 | 82.07 | FLASH | 21.4 |
| o-H2CO 432–331 | 291.381 | 140.94 | FLASH | 21.4 |
| o-H2CO 431–330 | 291.384 | 140.94 | FLASH | 21.4 |
| p-H2CO 422–321 | 291.948 | 82.12 | FLASH | 21.4 |
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