/*
**
**  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
   54421.358056       0.000226       28.50496        0.91110        1.00000     0
   54421.358513       0.000231       27.85303        0.89083        1.00000     0
   54421.358967       0.000223       29.12251        0.93162        1.00000     0
   54421.359413       0.000223       28.81718        0.93164        1.00000     0
   54421.359864       0.000229       28.26231        0.90300        1.00000     0
   54421.360339       0.000246       26.24539        0.84036        1.00000     0
   54421.360825       0.000240       26.67551        0.86190        1.00000     0
   54421.361308       0.000243       26.43346        0.85135        1.00000     0
   54421.361780       0.000229       28.27182        0.90626        1.00000     0
   54421.362260       0.000252       25.36533        0.81883        1.00000     0
   54421.362859       0.000347       26.32337        0.71680        0.97816     0
   54421.427416       0.000258       28.97232        0.93198        0.99642     0
   54421.427946       0.000272       27.53267        0.88468        1.00000     0
   54421.428481       0.000263       27.99657        0.91167        1.00000     0
   54421.429008       0.000263       28.13281        0.91142        1.00000     0
   54421.429526       0.000255       29.32133        0.94361        1.00000     0
   54421.430041       0.000260       28.57438        0.91793        1.00000     0
   54421.430579       0.000278       26.69462        0.86437        1.00000     0
   54421.431140       0.000284       26.53137        0.84680        1.00000     0
   54421.431696       0.000272       28.23320        0.89651        0.99462     0
   54421.496693       0.000252       25.60934        0.82676        0.99620     0
   54421.497208       0.000263       24.63017        0.78844        1.00000     0
   54421.497714       0.000243       26.49713        0.85197        1.00000     0
   54421.498203       0.000246       26.26491        0.84320        1.00000     0
   54421.498701       0.000252       25.84660        0.82815        1.00000     0
   54421.499216       0.000263       24.76202        0.79324        1.00000     0
   54421.499731       0.000252       25.64577        0.82715        1.00000     0
   54421.500223       0.000240       27.05181        0.86293        1.00000     0
   54421.500915       0.000451       26.02376        0.62049        1.00000     0