/*
**
**  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
   55269.869653       0.000220       31.86036        1.02912        1.00000     0
   55269.870075       0.000203       33.46454        1.07890        1.00000     0
   55269.870472       0.000194       34.75610        1.11452        1.00000     0
   55269.870865       0.000200       33.38531        1.07616        1.00000     0
   55269.871262       0.000197       34.33625        1.09844        1.00000     0
   55269.871661       0.000203       33.09430        1.06765        1.00000     0
   55269.872060       0.000197       34.28939        1.09895        1.00000     0
   55269.872462       0.000205       33.02453        1.06082        1.00000     0
   55269.872870       0.000203       33.17695        1.07326        1.00000     0
   55269.873270       0.000197       34.00634        1.10447        1.00000     0
   55269.873666       0.000200       33.76855        1.08514        1.00000     0
   55269.874068       0.000203       33.70843        1.07168        1.00000     0
   55269.874462       0.000191       36.14047        1.15335        1.00000     0
   55269.874858       0.000205       32.86443        1.05951        1.00000     0
   55269.875255       0.000191       34.93231        1.13054        1.00000     0
   55269.875642       0.000197       34.68864        1.10761        1.00000     0
   55269.876039       0.000200       33.90430        1.09282        1.00000     0
   55269.876432       0.000194       35.01168        1.11230        1.00000     0
   55269.876820       0.000194       35.00467        1.11629        1.00000     0
   55269.877205       0.000191       35.31969        1.14356        1.00000     0
   55269.877601       0.000205       33.03488        1.05667        1.00000     0
   55269.878004       0.000197       34.07180        1.09716        1.00000     0
   55269.878388       0.000188       36.13729        1.15683        1.00000     0
   55269.878770       0.000194       34.48726        1.11556        1.00000     0
   55269.879158       0.000194       35.12820        1.12157        1.00000     0
   55269.879540       0.000188       35.90379        1.14482        1.00000     0
   55269.879925       0.000197       34.17551        1.10089        1.00000     0
   55269.880330       0.000208       32.99160        1.05191        1.00000     0