/*
**
**  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
   55660.976311       0.000327       19.33686        0.62299        1.00000     0
   55660.976959       0.000321       19.82204        0.63242        1.00000     0
   55660.977621       0.000341       18.43605        0.59136        1.00000     0
   55660.978293       0.000330       19.20275        0.61498        1.00000     0
   55660.978938       0.000315       20.02318        0.64225        1.00000     0
   55660.979566       0.000312       20.16793        0.64756        1.00000     0
   55660.980214       0.000336       18.63708        0.60316        1.00000     0
   55660.980882       0.000333       18.77768        0.60757        1.00000     0
   55660.981557       0.000341       18.33754        0.59271        1.00000     0
   55660.982196       0.000298       21.04068        0.67733        1.00000     0
   55660.982801       0.000307       20.53264        0.65995        1.00000     0
   55660.983420       0.000312       20.07685        0.64920        1.00000     0
   55660.984057       0.000324       19.30980        0.62634        1.00000     0
   55660.984702       0.000321       19.61601        0.62841        1.00000     0
   55660.985330       0.000307       20.63988        0.65852        1.00000     0
   55660.986218       0.000582       20.07870        0.47217        1.00000     0