/*
**
**  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
   56773.116291       0.000237       26.91004        0.85773        1.00000     0
   56773.116753       0.000226       27.84760        0.89631        1.00000     0
   56773.117231       0.000252       25.00597        0.80037        1.00000     0
   56773.117726       0.000243       26.08490        0.82929        1.00000     0
   56773.118203       0.000234       26.65994        0.85020        1.00000     0
   56773.118678       0.000240       26.27320        0.83323        1.00000     0
   56773.119141       0.000223       28.63494        0.91104        1.00000     0
   56773.119589       0.000226       27.63194        0.88227        1.00000     0
   56773.120035       0.000220       28.49507        0.91360        1.00000     0
   56773.120489       0.000234       27.18480        0.86439        1.00000     0
   56773.120958       0.000234       26.87246        0.85868        1.00000     0
   56773.121429       0.000237       26.41024        0.84112        1.00000     0
   56773.121913       0.000246       25.47369        0.81605        1.00000     0
   56773.122390       0.000231       27.19042        0.86978        1.00000     0
   56773.122856       0.000234       26.75027        0.85372        1.00000     0
   56773.123322       0.000231       27.45855        0.87169        1.00000     0
   56773.123782       0.000229       28.15007        0.89700        1.00000     0
   56773.124251       0.000240       26.25357        0.83781        1.00000     0
   56773.124725       0.000234       27.01749        0.85820        1.00000     0
   56773.125315       0.000356       27.12405        0.70549        0.99312     0
   56773.138643       0.000234       27.67543        0.88083        0.99277     0
   56773.139097       0.000220       29.27118        0.93088        1.00000     0
   56773.139540       0.000223       28.48705        0.91316        1.00000     0
   56773.139988       0.000226       28.50067        0.90280        1.00000     0
   56773.140446       0.000231       27.48034        0.87755        1.00000     0
   56773.140900       0.000223       28.19452        0.90715        1.00000     0
   56773.141345       0.000223       28.52806        0.91025        1.00000     0
   56773.141953       0.000385       27.94881        0.68454        1.00000     0