| name | type | length | unit | ucd | description |
| HeadObjID | bigint | 8 | | | ID of first object in bunch (points to QsoBunch) |
| tripleID | int | 4 | | | Unique ID of this triple in the bunch |
| QsoPrimary | bit | 1 | | | 1; this is best triple of bunch |
| TargetObjID | bigint | 8 | | | target QSO or surrogate target object or zero |
| SpecObjID | bigint | 8 | | | spec QSO or surrogate specobj or 0 |
| BestObjID | bigint | 8 | | | best QSO or surrogate best or |
| TargetQsoTargeted | bit | 1 | | | 1: Target was flagged QSO |
| SpecQsoConfirmed | bit | 1 | | | 1; Spec was confirmed QSO |
| SpecQsoUnknown | bit | 1 | | | 1; Spec was class unkonwn |
| SpecQsoLargeZ | bit | 1 | | | 1; SpecObj has Z > 0.6 |
| SpecQsoTargeted | bit | 1 | | | 1; Spec was targeted as QSO |
| BestQsoTargeted | bit | 1 | | | 1: Best was flagged QSO |
| dist_Target_Best | float | 8 | arcmins | POS_ANG_DIST_GENERAL | distance arcMin between Target and Best |
| dist_Target_Spec | float | 8 | arcmins | POS_ANG_DIST_GENERAL | distance arcMin betweenTarget and Spec |
| dist_Best_Spec | float | 8 | arcmins | POS_ANG_DIST_GENERAL | distance arcMin between Best and Spec |
| psfmag_i_diff | float | 8 | mag | PHOT_COLOR | -- (target.psfmag_i - best.psfmag_i) |
| psfmag_g_i_diff | float | 8 | mag | PHOT_COLOR | (target.psfmag_g-target.psfmag_i) - (best.psfmag_g-best.psfmag_i) |
| SpecRa | float | 8 | deg | POS_EQ_RA_MAIN | ra in J2000 |
| SpecDec | float | 8 | deg | POS_EQ_DEC_MAIN | dec in J2000 |
| SpecCx | float | 8 | | POS_EQ_CART_X | unit vector for ra+dec |
| SpecCy | float | 8 | | POS_EQ_CART_Y | unit vector for ra+dec |
| SpecCz | float | 8 | | POS_EQ_CART_Z | unit vector for ra+dec |
| SpecZ | float | 8 | | REDSHIFT | Final Redshift |
| SpecZerr | real | 4 | | REDSHIFT ERROR | Redshift error |
| SpecZConf | real | 4 | | REDSHIFT STAT_PROBABILITY | Redshift confidence |
SpecZStatus | smallint | 2 | | CODE_QUALITY | Redshift status |
SpecZWarning | int | 4 | | | Spectral Classification |
SpecClass | smallint | 2 | | | Spectral Classification |
| SpecPlate | smallint | 2 | | ID_PLATE | Plate ID |
| SpecFiberID | smallint | 2 | | ID_FIBER | Fiber ID |
| SpecMjd | int | 4 | MJD | TIME_DATE | MJD of observation |
| SpecSciencePrimary | smallint | 2 | | CODE_MISC | Deemed to be science-worthy (defines default view SpecObj) |
| SpecPrimTarget | int | 4 | | | Bit mask of target categories |
| SpecTargetID | bigint | 8 | | | object ID in target table |
| SpecTargetObjID | bigint | 8 | | | Unique ID of the Target observation |
| SpecBestObjID | bigint | 8 | | | Unique ID of the Best observation |
| SpecLineID | bigint | 8 | | | Unique identifier of the line |
| SpecMaxVelocity | real | 4 | | MAX_VELOCITY | Velocity estimate based on FWHM velocity of broadest good line -- /U km/s |
| SpecPlateSn1_i | float | 8 | | | PLATE Spectogram 1(S/N)^2 i band |
| SpecPlateSn2_i | float | 8 | | | PLATE Spectogram 2 (S/N)^2 i band |
| targetRa | float | 8 | deg | | J2000 right ascension (r') |
| targetDec | float | 8 | deg | | J2000 declination (r') |
| targetCx | float | 8 | | POS_EQ_CART_X | unit vector for ra+dec |
| targetCy | float | 8 | | POS_EQ_CART_Y | unit vector for ra+dec |
| targetCz | float | 8 | | POS_EQ_CART_Z | unit vector for ra+dec |
| targetPsfMag_u | real | 4 | mag | PHOT_SDSS_U | PSF flux |
| targetPsfMag_g | real | 4 | mag | PHOT_SDSS_G | PSF flux |
| targetPsfMag_r | real | 4 | mag | PHOT_SDSS_R | PSF flux |
| targetPsfMag_i | real | 4 | mag | PHOT_SDSS_I | PSF flux |
| targetPsfMag_z | real | 4 | mag | PHOT_SDSS_Z | PSF flux |
| targetPsfMagErr_u | real | 4 | mag | | PSF flux error |
| targetPsfMagErr_g | real | 4 | mag | | PSF flux error |
| targetPsfMagErr_r | real | 4 | mag | | PSF flux error |
| targetPsfMagErr_i | real | 4 | mag | | PSF flux error |
| targetPsfMagErr_z | real | 4 | mag | | PSF flux error |
| targetExtinction_u | real | 4 | mag | | Extinction in each filter |
| targetExtinction_g | real | 4 | mag | | Extinction in each filter |
| targetExtinction_r | real | 4 | mag | | Extinction in each filter |
| targetExtinction_i | real | 4 | mag | | Extinction in each filter |
| targetExtinction_z | real | 4 | mag | | Extinction in each filter |
| targetType | int | 4 | | | Morphological type classification of object. |
| targetMode | int | 4 | | | 1:primary, 2:secondary,4:outside survey. |
| targetStatus | int | 4 | | | Photo status flags of this object |
| targetFlags | bigint | 8 | | | Photo Object Attribute |
| targetFlags_u | bigint | 8 | | | Object detection flags per band |
| targetFlags_g | bigint | 8 | | | Object detection flags per band |
| targetFlags_r | bigint | 8 | | | Object detection flags per band |
| targetFlags_i | bigint | 8 | | | Object detection flags per band |
| targetFlags_z | bigint | 8 | | | Object detection flags per band |
| targetRowC_i | real | 4 | | | Row center position (r' coordinates) |
| targetColC_i | real | 4 | | | Column center position (r' coordinates) |
| targetInsideMask | int | 4 | | | Flag tells if object inside a mask & why |
| targetPrimTarget | int | 4 | | | Bit mask of primary target categories |
| targetPriTargHiZ | int | 4 | | | 1: object flagged as HiZ QSO |
| targetPriTargLowZ | int | 4 | | | 1: object flagged as cap|skirt QSO |
| targetPriTargFirst | int | 4 | | | 1: object flagged as first cap|skirt QSO |
| targetFieldID | bigint | 8 | | | Field this object is in |
| targetFieldMjd | float | 8 | | | MJD(TAI) Julian Date row 0 was read |
| targetFieldQuality | int | 4 | | | Quality of field |
| targetFieldCulled | int | 4 | | | Targets culled from the field |
| targetSectorID | bigint | 8 | | | The sector covering this object or 0 |
| targetFirstID | int | 4 | | | matching FIRST catalog id or 0 |
| targetFirstPeak | float | 8 | | | Peak first radio flux |
| targetRosatID | int | 4 | | | matching ROSAT source (0 = no match) |
| targetRosatCps | float | 8 | ct/s -- | | integrated ROSAT counts |
| targetMi | float | 8 | | | estimated absolute magnitude based on Pen (1999) (or 0) |
| targetUniform | bit | 1 | | | boolean: part of the uniform QSO sample |
| bestRa | float | 8 | deg | | J2000 right ascension (r') |
| bestDec | float | 8 | deg | | J2000 declination (r') |
| bestCx | float | 8 | | POS_EQ_CART_X | unit vector for ra+dec |
| bestCy | float | 8 | | POS_EQ_CART_Y | unit vector for ra+dec |
| bestCz | float | 8 | | POS_EQ_CART_Z | unit vector for ra+dec |
| bestPsfMag_u | real | 4 | mag | PHOT_SDSS_U | PSF flux |
| bestPsfMag_g | real | 4 | mag | PHOT_SDSS_G | PSF flux |
| bestPsfMag_r | real | 4 | mag | PHOT_SDSS_R | PSF flux |
| bestPsfMag_i | real | 4 | mag | PHOT_SDSS_I | PSF flux |
| bestPsfMag_z | real | 4 | mag | PHOT_SDSS_Z | PSF flux |
| bestPsfMagErr_u | real | 4 | mag | | PSF flux error |
| bestPsfMagErr_g | real | 4 | mag | | PSF flux error |
| bestPsfMagErr_r | real | 4 | mag | | PSF flux error |
| bestPsfMagErr_i | real | 4 | mag | | PSF flux error |
| bestPsfMagErr_z | real | 4 | mag | | PSF flux error |
| bestExtinction_u | real | 4 | mag | | Extinction in each filter |
| bestExtinction_g | real | 4 | mag | | Extinction in each filter |
| bestExtinction_r | real | 4 | mag | | Extinction in each filter |
| bestExtinction_i | real | 4 | mag | | Extinction in each filter |
| bestExtinction_z | real | 4 | mag | | Extinction in each filter |
| bestType | int | 4 | | | Morphological type classification |
| bestMode | int | 4 | | | 1:primary, 2:secondary, 4:outside survey |
| bestFlags | bigint | 8 | | | Photo Object Attribute Flags |
| bestFlags_u | bigint | 8 | | | Object detection flags per band |
| bestFlags_g | bigint | 8 | | | Object detection flags per band |
| bestFlags_r | bigint | 8 | | | Object detection flags per band |
| bestFlags_i | bigint | 8 | | | Object detection flags per band |
| bestFlags_z | bigint | 8 | | | Object detection flags per band |
| bestRowC_i | real | 4 | | | Row center position (r' coordinates) |
| bestColC_i | real | 4 | | | Column center position (r' coordinates) |
| bestInsideMask | int | 4 | | | Flag indicates if object is inside a mask |
| bestPrimTarget | int | 4 | | | Bit mask of primary target categories |
| bestPriTargHiZ | int | 4 | | | 1: object flagged as HiZ QSO |
| bestPriTargLowZ | int | 4 | | | 1: object flagged as cap|skirt |
| bestPriTargFirst | int | 4 | | | 1: object flagged as first cap|skirt QSO |
| bestFieldID | bigint | 8 | | | Link to the field this object is in |
| bestFieldMjd | float | 8 | | | MJD(TAI) Julian Date when row 0 was read |
| bestFieldQuality | int | 4 | | | Quality of field in terms of acceptance |
| bestFieldCulled | int | 4 | | | Targets culled from the field |
| bestFirstID | int | 4 | | | FIRST catalog id of one matching source |
| bestFirstPeak | float | 8 | mJy | | Peak first radio flux |
| bestRosatID | int | 4 | | | ID of matching ROSAT source (0 =no match) |
| bestRosatCps | float | 8 | ct/s | | integrated ROSAT counts |
| bestMi | float | 8 | | | estimated absolute magnitude based on Pen (1999) and Pei (1999) (or 0) |