/*
**
**  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
   55535.523303       0.000255       25.33624        0.80827        1.00000     0
   55535.523806       0.000249       25.87237        0.82682        1.00000     0
   55535.524307       0.000252       25.35384        0.81703        1.00000     0
   55535.524805       0.000246       26.11771        0.83815        1.00000     0
   55535.525317       0.000266       24.23364        0.77979        1.00000     0
   55535.525846       0.000263       24.55678        0.78373        1.00000     0
   55535.526367       0.000258       25.00531        0.79556        1.00000     0
   55535.526877       0.000252       25.40290        0.81550        1.00000     0
   55535.527377       0.000249       25.79141        0.82873        1.00000     0
   55535.527875       0.000249       25.47772        0.81771        1.00000     0
   55535.528387       0.000263       24.33941        0.78084        1.00000     0
   55535.528902       0.000252       25.19848        0.80712        1.00000     0
   55535.529431       0.000278       22.95162        0.73908        1.00000     0
   55535.529944       0.000234       27.27243        0.87723        1.00000     0
   55535.530441       0.000263       24.51478        0.78023        1.00000     0
   55535.530953       0.000249       25.45052        0.82156        1.00000     0
   55535.531463       0.000260       24.12722        0.78333        1.00000     0
   55535.531981       0.000258       24.71439        0.79435        1.00000     0
   55535.532499       0.000260       24.83140        0.79008        1.00000     0
   55535.533019       0.000260       24.47558        0.78950        1.00000     0
   55535.533535       0.000255       24.94525        0.80013        1.00000     0
   55535.534050       0.000260       24.93029        0.79998        1.00000     0
   55535.534579       0.000269       24.10118        0.76860        1.00000     0
   55535.535103       0.000255       24.77511        0.80582        1.00000     0
   55535.535621       0.000263       23.90663        0.77125        1.00000     0
   55535.536133       0.000249       25.19349        0.82004        1.00000     0
   55535.536639       0.000258       24.40714        0.78501        1.00000     0
   55535.537160       0.000263       24.02937        0.77652        1.00000     0
   55535.537811       0.000388       22.84340        0.62835        0.98505     0