| ExtObjectId | ExtObjectId | Unique EXT object identifier [None] | |
| MaxPositionalError | float | Maximum positional uncertainty for a source to be used for astrometric calibration or validation [mas] | |
| MaxVisMagnitudeError | float | Maximum VIS magnitude error for a source to be used for astrometric calibration or validation [mag] | |
| MaxVisSpreadmodel | float | Maximum value of SPREAD_MODEL parameter for a source to be used for calibration or validation [None] | |
| MinAngularDistance | float | Minimum distance to nearest neighbour for a source to be used for calibration or validation [mas] | |
| MinVisSignaltonoiseCalibrator | float | Minimum signal-to-noise in the VIS band for a source to be used for calibration [None] | |
| MinVisSignaltonoiseValidator | float | Minimum signal-to-noise in the VIS band for a source to be used for validation [None] | |
