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  Gamma-ray loud blazars optical monitoring. II. (Raiteri+ 1998)
Post annotation
1.J/A+AS/127/445/tab2-21RVB photometry (1141 rows)
2.J/A+AS/127/445/tableObservations dates for tab2-21 data (50 rows)

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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)Name (char) QSO name (;meta.main)
   (ALL)Band (char) [BVR] Band (meta.note)
  (1)magl (char) Label of mag column (Note 1)   (meta.note)
  (1)HJD d Heliocentric Julian date (time.epoch)
  (1)mag mag Magnitude or differential magnitude (phot.mag;arith.diff)
  (1)e_mag mag rms uncertainty on mag (stat.error)
  (2)Obs1 "Y:M:D" (n)Date of the beginning of observations (time.epoch)
  (2)Obs2 "Y:M:D" (n)Date of the end of observations (time.epoch)
  (2)magMin mag Minimum magnitude in Band (phot.mag)
  (2)magMax mag Maximum magnitude in Band (phot.mag)
  (2)Nframes  Number of frames (meta.number)

ALL cols
(n) indicates a possible blank or NULL column(i)indexed column
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