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Table 1
Properties of the observations carried out in this work.
| Frequency range | Telescope | Beam size | df | rms | F eff | B eff | Targeted molecules |
| (GHz) | (arcsec) | (kHz) | (mK) | (%) | (%) | ||
|
|
|||||||
| 83.550–85.370 | IRAM 30 m | 29 | 50 | 3–4 | 95 | 81 | CH3OH, CH3OCHO, CH3OCH3, CH3CHO |
| 86.830–88.650 | IRAM 30 m | 29 | 50 | 3–4 | 95 | 81 | HNCO, c-HCOOH, CH3OCHO, CH3OCH3 |
| 89.532–89.629 | OSO 20 m | 41 | 60 | 8 | – | 49 | t-HCOOH |
| 89.190–89.370 | NRO 45 m | 20 | 61 | 3–5 | – | 44 | CH3OCHO |
| 89.350–89.530 | NRO 45 m | 20 | 61 | 5–6 | – | 44 | CH2DOH |
| 89.530–89.780 | NRO 45 m | 20 | 61 | 4–5 | – | 44 | CH3OCH3 |
| 90.075–90.325 | NRO 45 m | 20 | 61 | 5–6 | – | 44 | CH3OCHO |
| 95.901–96.001 | OSO 20 m | 38 | 64 | 6–7 | – | 50 | E-CH3CHO, A-CH3CHO |
| 96.020–97.840 | IRAM 30 m | 25 | 50 | 27–30 | 94 | 80 | CH3OH |
| 98.740–98.990 | NRO 45 m | 18 | 61 | 4–5 | – | 42 | E-CH3CHO, A-CH3CHO |
| 99.200–99.450 | NRO 45 m | 18 | 61 | 4–5 | – | 42 | CH3OCH3 |
| 99.230–101.050 | IRAM 30 m | 25 | 50 | 3–4 | 94 | 80 | CH3OCHO, CH3OCH3 |
| 100.942–101.558 | OSO 20 m | 36 | 68 | 5 | – | 42 | p-CH2CO |
| 100.910–101.160 | NRO 45 m | 18 | 61 | 4–5 | – | 42 | CH2CO, CH3CHO |
| 101.675–102.290 | OSO 20 m | 36 | 68 | 6 | – | 47 | o-CH2CO |
| 102.510–104.330 | IRAM 30 m | 25 | 50 | 3–4 | 94 | 80 | CH3OCHO |
| 143.800–145.620 | IRAM 30 m | 16 | 50 | 35–40 | 93 | 73 | CH3OH |
| 156.300–158.120 | IRAM 30 m | 15 | 50 | 35–40 | 93 | 73 | CH3OH |
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