/*
**
**  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
   54928.864227       0.000281       22.91317        0.72852        1.00000     0
   54928.864763       0.000255       25.45908        0.81097        1.00000     0
   54928.865281       0.000263       24.62625        0.78416        1.00000     0
   54928.865819       0.000275       23.31491        0.74634        1.00000     0
   54928.866377       0.000284       22.59871        0.72530        1.00000     0
   54928.866933       0.000272       23.67315        0.75588        1.00000     0
   54928.867485       0.000281       22.84709        0.73267        1.00000     0
   54928.868027       0.000260       24.78690        0.78744        1.00000     0
   54928.868562       0.000275       23.27976        0.74731        1.00000     0
   54928.869097       0.000260       24.70026        0.78883        1.00000     0
   54928.869627       0.000269       23.93598        0.76316        1.00000     0
   54928.870153       0.000258       24.95106        0.79608        1.00000     0
   54928.870677       0.000266       24.02167        0.77064        1.00000     0
   54928.871218       0.000275       23.19080        0.74903        1.00000     0
   54928.871756       0.000263       24.38099        0.77829        1.00000     0
   54928.872289       0.000269       24.15770        0.77297        1.00000     0
   54928.872824       0.000266       24.05742        0.77251        1.00000     0
   54928.873351       0.000260       25.06269        0.79781        1.00000     0
   54928.873892       0.000281       22.84813        0.72973        1.00000     0
   54928.874433       0.000260       24.67175        0.78807        1.00000     0
   54928.875202       0.000509       24.14179        0.56266        0.99523     0
   54928.936872       0.000263       24.31176        0.77469        0.99560     0
   54928.937381       0.000246       25.43216        0.81108        1.00000     0
   54928.937896       0.000269       24.53138        0.77312        0.97847     0