| 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 |
| HeadObjType | char | 6 | | | type of head object 'TARGET', 'SPEC', 'BEST' |
| 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 | | | distance arcMin |
| dist_Target_Spec | float | 8 | | | distance arcMin |
| dist_Best_Spec | float | 8 | | | distance arcMin |
| psfmag_i_diff | float | 8 | | | |
| psfmag_g_i_diff | float | 8 | | | |