/*
**
**  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
   56685.159721       0.000399       15.58243        0.50153        1.00000     0
   56685.160546       0.000425       14.78446        0.47500        1.00000     0
   56685.161419       0.000448       14.17546        0.45546        1.00000     0
   56685.162264       0.000396       15.91977        0.51358        1.00000     0
   56685.163051       0.000391       16.16551        0.51962        1.00000     0
   56685.163830       0.000388       16.14335        0.51993        1.00000     0
   56685.164631       0.000414       15.31817        0.49101        1.00000     0
   56685.165450       0.000405       15.57424        0.49626        1.00000     0
   56685.166263       0.000408       15.34016        0.49275        1.00000     0
   56685.167070       0.000399       15.68097        0.50880        1.00000     0
   56685.167892       0.000422       14.80158        0.47356        1.00000     0
   56685.168728       0.000414       14.98056        0.48669        1.00000     0
   56685.169565       0.000422       14.89301        0.47503        1.00000     0
   56685.170754       0.000767       14.70724        0.35083        1.00000     0