             
--              The  "best available" measurements refer first to those objects with qfPerfect > 0.85 and good flags, 
--              but descends down a "waterfall logic" in ipp so that there exists a mean mag for less than ideal objects. The logic is given in Magnier etal 2013.

objID           dimensionless   BIGINT  8       NA      ODM object identifier index
gcObjID		dimensionless	BIGINT	8	 NA 	ODM galactic coordinates identifier
gQfPerfect      dimensionless   REAL    4       -999    maximum psf qfPerfect from best available g band detections 
gMeanPSFMag     AB magnitude    REAL    4       -999    mean g psf AB magnitude from best available measurements (best available as current defined by ipp "waterfall logic"  
gMeanPSFMagErr  AB magnitude    REAL    4       -999    estimated error of best availalbe g-band psf AB magnitudes (individual errors added in quadrature)
gnIncPSFMag     dimensionless   SMALLINT2       -999    number of best available detections included in mean psfMag 
gMeanPSFMagStd  dimensioless    REAL    4       -999    standard deviation of best available measurements - compared with MeanErr this is one measure of true variability  
gMinPSFMag      AB magnitude    REAL    4       -999    minimum best available PSFMag - min and max are given for PSFMag as they may indicate variability.  
gMaxPSFMag      AB magnitude    REAL    4       -999    maximum best available PSFMag   

gMeanKronMag    AB magnitude    REAL    4       -999    mean g kron AB magnitude from best available measurements     
gMeanKronMagErr AB magnitude    REAL    4       -999    estimated error of mean g kron AB magnitude 
gnIncKronMag    dimensionless   SMALLINT2       -999    number of best available detections included mean Kron mag 
gMeanKronMagStd dimensioless    REAL    4       -999    standard deviation of best available measurements   

gMeanApMag      AB magnitude    REAL    4       -999    mean g kron AB magnitude from best available measurements
gMeanApMagErr   AB magnitude    REAL    4       -999    estimated error of g kron AB magnitude mean
gnIncApMag      dimensionless   SMALLINT2       -999    number of detections included in best available mean of Kron mag in g filter
gMeanApMagStd   dimensioless    REAL    4       -999    standard deviation of best available measurements   
gFlags          dimensionless   BIGINT  8       NA      flags for g mean
-- duplicate for other filters

[62 byte/obj/filter + 8 byte/filter]
