1 specRun Where/by whom the spectrum was taken 2 specID1 Normally the mask/slit/fibre ID 3 specID2 A secondary housekeeping ID for the target 4 aperture Number of extraction aperture (1=primary target, 2=serendipitous object) 5 UDSDR1ID Number in UDS DR1 catalogue 6 sxdfID Name in SXDS optical catalogues 7 sxdfRA RA of object in SXDS catalogues 8 sxdfDec Dec of object in SXDS catalogues 9 template (usually) an indication of the nature of the spectrum 10 z redshift 11 quality not guaranteed except for Akiyama's spectra (A=multiple features,B=single reliable feature, C=single dubious feature,Z=not provided) 12 features where available, a list (not always exhaustive) of features used to identify the redshift 13 UDSDR3ID Number in UDS DR3 catalogue