Table 1
Parameters of the observations.
| Band | Receiver | Frequency (GHz) | Observation dates (MM.YY) | HBPW(a) (″) | Spectral (kHz) | resolution (kms−1) | (Pwv) (mm) | (Tsys) (K) | (σ)(b) (mK) |  |
|---|---|---|---|---|---|---|---|---|---|---|
| 2 mm | SEPIA180 | 159–185 | 09.18 | 36 | 76 | 0.13 | 1.3(c) | 514(d) | 11 | 79 |
| PI230 | 186–212 | 09.18 | 31 | 61 | 0.09 | 1.2(e) | 129(f) | 18 | 71 | |
| 1.2 mm | PI230 | 202–278 | 03–04.17 | 27 | 61 | 0.08 | 1.9(g) | 157(h) | 14 | 71 |
| 0.8 mm | FLASH345 | 270–374 | 04 and 09.18 | 18 | 38 | 0.03 | 0.7(i) | 532(j) | 25 | 69 |
| 0.7 mm | FLASH460 | 408 and 464 | 04.18 | 14 | 76 | 0.05 | 0.7(k) | 480(l) | 67 | 55 |
Notes. (a)Given at the frequency of 180 GHz, 196 GHz, 230 GHz, 345 GHz, and 408 GHz for SEPIA180, PI230 (4–8GHz IF), PI230 (4–12GHz IF), FLASH345, and FLASH460, respectively. (b)Given for a resolution of 0.7 km s−1 on Tmb scale. All frequencies were covered twice, except for the one at the edges of the bands, corresponding to the frequencies 159–161 GHz, 186–188GHz, 318–320GHz, 328–330GHz, and 372–374GHz, where the rms is higher by a factor 
.(d)82–293 K excluding sidebands covering the water line at 183 GHz. (e)0.6–1.6 mm.(f)93–272K. (g)0.3–1.6 mm. (h)103–377 K. (i)0.1–1.6 mm. (j)146–594K excluding sidebands covering water lines. (k)0.1–0.5 mm. (l)478 at 408GHz and 829 Kat 464 GHz.
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