/*
**
**  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
   57040.543786       0.000171       43.50109        1.39386        1.00000     0
   57040.544151       0.000194       41.38063        1.33627        1.00000     0
   57040.544527       0.000182       40.56545        1.31331        1.00000     0
   57040.544880       0.000171       42.73307        1.36842        1.00000     0
   57040.545230       0.000179       40.01492        1.28976        1.00000     0
   57040.545592       0.000182       39.54709        1.27529        1.00000     0
   57040.545951       0.000177       41.43311        1.33232        1.00000     0
   57040.546301       0.000174       42.05851        1.34933        1.00000     0
   57040.546654       0.000179       40.74106        1.29783        1.00000     0
   57040.547016       0.000182       40.23228        1.29818        1.00000     0
   57040.547377       0.000179       40.75777        1.30974        1.00000     0
   57040.547733       0.000177       41.00986        1.32184        1.00000     0
   57040.548089       0.000179       41.13661        1.30977        1.00000     0
   57040.548448       0.000179       40.01990        1.29534        1.00000     0
   57040.548810       0.000182       40.09238        1.27544        1.00000     0
   57040.549168       0.000177       40.92747        1.31994        1.00000     0
   57040.549518       0.000174       41.57100        1.33634        1.00000     0
   57040.549869       0.000177       41.12973        1.32612        1.00000     0
   57040.550233       0.000188       38.77932        1.24980        1.00000     0
   57040.550601       0.000179       40.24679        1.29521        1.00000     0
   57040.550954       0.000174       41.55892        1.33607        1.00000     0
   57040.551312       0.000185       39.19581        1.24988        1.00000     0
   57040.551674       0.000177       40.58063        1.31493        1.00000     0
   57040.552024       0.000174       41.57351        1.33648        1.00000     0
   57040.552371       0.000174       41.84026        1.35077        1.00000     0
   57040.552722       0.000177       40.50645        1.31109        1.00000     0
   57040.553066       0.000168       42.59777        1.38034        1.00000     0
   57040.553413       0.000179       41.01588        1.31015        1.00000     0
   57040.553763       0.000171       43.23454        1.38236        1.00000     0
   57040.554110       0.000177       40.92290        1.31661        1.00000     0
   57040.554559       0.000272       43.77379        1.09722        1.00000     0