/*
**
**  Swift/XRT light curve for Mrk 421.
**
**  Data taken from the automatic processing at http://www.swift.psu.edu/monitoring/
**
**  When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949.
**
**  Key:
**
**   BinCenter      - Center of time bin (MJD)
**   BinHW          - One-half of the full time bin size (days)
**   Rate           - The background subtracted, PSF corrected and pile-up corrected source count rate (cts/s).
**   RateError      - 1 sigma error in source count rate (cts/s)
**   FracExp        - Conversion factor between bin size and observing time
**   Mode           - 0 if in Windowed Timing (WT)
**                    1 if in Photon Counting (PC)
**
**
**  Upper limits have an error listed as -1.00000.
**
*/
      BinCenter          BinHW           Rate      RateError        FracExp  Mode
   55957.409485       0.000446       15.94156        0.51604        1.00000     0
   55957.410358       0.000428       16.09283        0.52139        1.00000     0
   55957.411218       0.000431       15.80855        0.51562        1.00000     0
   55957.412054       0.000405       16.91272        0.54472        1.00000     0
   55957.412882       0.000422       16.23922        0.52418        1.00000     0
   55957.413721       0.000417       16.56866        0.53502        1.00000     0
   55957.414569       0.000431       15.82380        0.51396        1.00000     0
   55957.415431       0.000431       15.91208        0.51224        1.00000     0
   55957.416258       0.000396       17.10874        0.55293        1.00000     0
   55957.417048       0.000394       17.48376        0.56106        1.00000     0
   55957.417896       0.000454       15.03196        0.48525        1.00000     0
   55957.418802       0.000451       15.03391        0.48718        1.00000     0
   55957.419667       0.000414       16.50196        0.53675        0.99301     0
   55957.420483       0.000402       16.77701        0.54582        1.00000     0
   55957.421554       0.000668       15.62558        0.40919        1.00000     0