/*
**
**  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
   54978.913638       0.000217       29.74329        0.96266        1.00000     0
   54978.914069       0.000214       30.48968        0.98687        1.00000     0
   54978.914492       0.000208       30.73660        0.98900        1.00000     0
   54978.914914       0.000214       30.00328        0.96297        1.00000     0
   54978.915337       0.000208       31.06398        0.98521        1.00000     0
   54978.915756       0.000211       30.85249        0.98322        1.00000     0
   54978.916179       0.000211       30.61104        0.97728        1.00000     0
   54978.916604       0.000214       30.01019        0.95819        1.00000     0
   54978.917021       0.000203       31.94179        1.01904        1.00000     0
   54978.917414       0.000191       34.06822        1.09502        1.00000     0
   54978.917814       0.000208       31.15126        0.99909        1.00000     0
   54978.918242       0.000220       28.84610        0.93513        1.00000     0
   54978.918664       0.000203       31.84358        1.01448        1.00000     0
   54978.919078       0.000211       29.92524        0.97114        1.00000     0
   54978.919495       0.000205       31.26537        0.99970        1.00000     0
   54978.919920       0.000220       28.94390        0.93255        1.00000     0
   54978.920354       0.000214       29.67205        0.96315        1.00000     0
   54978.920794       0.000226       28.70560        0.93621        1.00000     0
   54978.921231       0.000211       30.17457        0.97773        1.00000     0
   54978.921650       0.000208       30.99826        0.99901        1.00000     0
   54978.922067       0.000208       31.27855        0.99301        1.00000     0
   54978.922487       0.000211       30.21926        0.97319        1.00000     0
   54978.922903       0.000205       31.46872        1.00684        1.00000     0
   54978.923329       0.000220       29.39700        0.94029        1.00000     0
   54978.923751       0.000203       32.14336        1.02225        1.00000     0
   54978.924156       0.000203       31.88179        1.01986        1.00000     0
   54978.924671       0.000312       30.87039        0.81586        1.00000     0