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  Multiwavelength observations of 3C 454.3 III. (Vercellone+, 2010)
Post annotation
1.J/ApJ/712/405/table3Swift/XRT observation log (92 rows)

Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  Seq  Sequence identification number (;meta.main)
  Mode (char) [PC/WT] Observation mode (PC: photon counting or WT: windowed timing) (meta.code;obs)
  Start s (n)UT date of the observation start (time.start;obs)
  End s (n)UT date of the observation end (time.end;obs)
  Exp s Exposure time (time.duration;obs.exposure)

ALL cols
(n) indicates a possible blank or NULL column(i)indexed column
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usage  Display UCD1+    UCD1  
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