Table 1
Estimated rms noise level achieved toward Sgr B2(N) and (M).
| Sgr B2(N) | Sgr B2(M) | ||||
|
|
|
||||
| Frequency range | Estimated rms noise level (mK) | ||||
| (GHz) | range | median | range | median | |
|
|
|||||
| 80.0–89.9 | 10–25 | 13 | 12–22 | 15 | |
| 89.9–100.2 | 10–23 | 17 | 14–42 | 18 | |
| 100.2–114.6 | 12–35 | 22 | 14–34 | 22 | |
| 114.6–116.0 | 42–56 | 43 | 43–57 | 45 | |
|
|
|||||
| 136.0–147.9 | 17–21 | 20 | 24–26 | 25 | |
| 154.2–154.8 | 74 | 74 | 75 | 75 | |
| 163.2–172.9 | 25–42 | 28 | 47–55 | 51 | |
| 176.0–176.5 | 227 | 227 | 289 | 289 | |
|
|
|||||
| 201.8–204.6 | 66–220 | 91 | 72–118 | 85 | |
| 205.0–217.8 | 19–169 | 44 | 18–91 | 44 | |
| 219.2–228.0 | 47–155 | 54 | 42–69 | 52 | |
| 230.9–236.6 | 10–100 | 22 | 9–123 | 115 | |
| 240.7–241.3 | 114 | 114 | 169 | 169 | |
| 243.9–247.5 | 21–49 | 32 | 36–40 | 38 | |
| 251.9–254.5 | 16–21 | 19 | 14–19 | 17 | |
| 255.2–259.3 | 107–784 | 551 | 98–339 | 263 | |
| 260.0–267.2 | 37–200 | 49 | 50–85 | 84 | |
Notes. The rms noise levels are given in 
scale and are estimated from the radiometer formula, assuming a spectral resolution of 1.2 times the channel spacing below 180 GHz and 1.1 above. Some frequency ranges listed in the first column above 116 GHz include holes that were not covered by the observations.
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