| Show | Sort | Column | Constraint | Explain (UCD) |
| | | recno | | Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) (RECORD) |
| | | UGC | | UGC (VII/26) number (meta.id;meta.main) |
| | | ObsDate | "Y:M:D" | (n)Observation date (time.epoch;obs) |
| | | n_ObsDate | (char) | [+] +: Observed before the upgrade of the WSRT (meta.note) |
| | | rRA | arcsec | Spatial resolution of the unsmoothed data (pos.angResolution) |
| | | rDE | arcsec | Spatial resolution of the unsmoothed data (pos.angResolution) |
| | | rVel | km/s | Velocity resolution before Hanning smoothing (phys.veloc) |
| | | rmsch | mJy | rms noise level in the unsmoothed channel maps, in mJy/beam (instr.det.noise) |
| | | rmsmap | 10-19cm-2 | 1 sigma column density in the maps shown in the atlas, in 1019atoms/cm2 (stat.stdev;phys.columnDensity) |
| | | Prev | (char) | Previous 21 cm synthesis observations, in previous.dat file (meta.bib) |
| | | Rem | (char) | Remarks (meta.note) |
| | | Fig | (char) | Figure name (meta.bib.fig) |
ALL cols | | | |