/*
**
**  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
   55251.515681       0.000153       66.86876        2.13042        1.00000     0
   55251.515985       0.000150       60.23217        1.93979        1.00000     0
   55251.516280       0.000145       59.06930        1.91134        1.00000     0
   55251.516587       0.000162       55.48123        1.78800        1.00000     0
   55251.516908       0.000159       57.71164        1.85927        1.00000     0
   55251.517227       0.000159       58.45113        1.88963        1.00000     0
   55251.517545       0.000159       58.14279        1.88093        1.00000     0
   55251.517863       0.000159       58.30859        1.87257        1.00000     0
   55251.518196       0.000174       53.18594        1.73159        1.00000     0
   55251.518532       0.000162       56.85535        1.85236        1.00000     0
   55251.518856       0.000162       57.20480        1.84039        1.00000     0
   55251.519180       0.000162       56.75683        1.83987        1.00000     0
   55251.519504       0.000162       57.35206        1.84935        1.00000     0
   55251.519825       0.000159       58.66151        1.88712        1.00000     0
   55251.520140       0.000156       59.28696        1.91025        1.00000     0
   55251.520459       0.000162       56.28272        1.83097        1.00000     0
   55251.520783       0.000162       56.79779        1.84809        1.00000     0
   55251.521107       0.000162       57.74327        1.86542        1.00000     0
   55251.521437       0.000168       55.46724        1.79331        1.00000     0
   55251.521767       0.000162       56.86664        1.81661        1.00000     0
   55251.522088       0.000159       59.29400        1.89618        1.00000     0
   55251.522409       0.000162       56.51090        1.84136        1.00000     0
   55251.522730       0.000159       58.00497        1.87258        1.00000     0
   55251.523051       0.000162       56.38078        1.84119        1.00000     0
   55251.523375       0.000162       57.10598        1.82800        1.00000     0
   55251.523691       0.000153       59.88745        1.93631        1.00000     0
   55251.524003       0.000159       59.72684        1.90426        1.00000     0
   55251.524327       0.000165       55.38847        1.79934        1.00000     0
   55251.524651       0.000159       57.71219        1.87400        1.00000     0
   55251.524973       0.000162       57.70849        1.84827        1.00000     0
   55251.525294       0.000159       58.12924        1.87714        1.00000     0
   55251.525603       0.000150       60.97790        1.97773        1.00000     0
   55251.525919       0.000165       56.03908        1.81547        1.00000     0
   55251.526243       0.000159       56.27785        1.83895        1.00000     0
   55251.526558       0.000156       58.94022        1.88940        1.00000     0
   55251.526865       0.000150       61.46077        1.98098        1.00000     0
   55251.527180       0.000165       55.84277        1.82395        1.00000     0
   55251.527507       0.000162       56.56114        1.83467        1.00000     0
   55251.527828       0.000159       57.88551        1.86725        1.00000     0
   55251.528135       0.000148       62.32351        2.00639        1.00000     0
   55251.528445       0.000162       56.67337        1.84058        1.00000     0
   55251.528760       0.000153       60.31841        1.95095        1.00000     0
   55251.529073       0.000159       58.49307        1.88077        1.00000     0
   55251.529382       0.000150       60.40081        1.95397        1.00000     0
   55251.529689       0.000156       57.36260        1.88967        1.00000     0
   55251.529999       0.000153       59.50065        1.91963        1.00000     0
   55251.530311       0.000159       57.90670        1.87110        1.00000     0
   55251.530624       0.000153       59.51439        1.92922        1.00000     0
   55251.530927       0.000150       61.18572        1.97049        1.00000     0
   55251.531223       0.000145       63.14100        2.04257        1.00000     0
   55251.531657       0.000289       58.00124        1.39100        1.00000     0