diffMetaID   dimensionless   BIGINT 8 NA diff  identifier
batchID      dimensionless   BIGINT 8 NA batch  identifier
surveyID     dimensionless   TINYINT 1 NA survey flag identifier
filterID     dimensionless   TINYINT 1 NA filter id 
diffTypeID   dimensionless   TINYINT 1 0 diff type identifier
posImageID   dimensionless   BIGINT 8 NA positive image identifier
negImageID   dimensionless   BIGINT 8 NA negative image identifier
skyCellID    dimensionless   REAL 4 NA skycell region identifier 
photoCalID   dimensionless   INT 4 NA photometry code
magSat       dimensionless   REAL 4 -999 saturation magnitude level
analVer      alphanumeric   VARCHAR(100) 100 -999 analysis version index
expTime      seconds         REAL 4 -999 exposure time of positive image
ctype1       alphanumeric   VARCHAR(MAX) 8000 name of astrometric projection in RA
ctype2       alphanumeric   VARCHAR(MAX) 8000 name of astrometric projection in DEC
crval1       degrees        FLOAT 8 -999 RA corresponding to reference pixel
crval2       degrees        FLOAT 8 -999 DEC corresponding to reference pixel
crpix1       dimensionless  FLOAT 8 -999 reference pixel value for RA
crpix2       dimensionless  FLOAT 8 -999 reference pixel value for DEC
cdelt1       deg/pixel      FLOAT 8 -999 scale factor for RA
cdelt2       deg/pixel      FLOAT 8 -999 scale factor for DEC
pc001001     dimensionless  FLOAT 8 -999 elements of rotation/Dcale matrix 
pc001002     dimensionless  FLOAT 8 -999 elements of rotation/Dcale matrix
pc002001     dimensionless  FLOAT 8 -999 elements of rotation/Dcale matrix
pc002002     dimensionless  FLOAT 8 -999 elements of rotation/Dcale matrix
calibModNum  dimensionless  SMALLINT 2 NA calibration modification number
dataRelease  dimensionless  TINYINT 1 NA Data release
