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Table 1
Summary of WSRT 21-cm narrow-band observations.
| N dishes | 11–12 |
| Total observing time | 108 h |
| Observing period | June 2009 – May 2011 |
| Bandwidth/channels | 20 MHz/1024 |
| Velocity resolution | 4.2 km s-1 |
| Continuum resolution | 16.5′′ × 13.2′′, PA = 2.4° |
| 3σ noise continuum image | 0.15 mJy beam-1 |
| 3σ noise per channel (15′′ cube) | 0.13 mJy beam-1 |
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