/*
**
**  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
   55631.342445       0.000119       10.77361        0.76554        1.00000     0
   55631.343090       0.000527       11.98186        0.38296        1.00000     0
   55631.344141       0.000524       11.87982        0.38203        0.99448     0
   55631.345159       0.000495       12.61343        0.40310        1.00000     0
   55631.346163       0.000509       12.30189        0.39073        1.00000     0
   55631.347205       0.000532       11.68329        0.37666        1.00000     0
   55631.348270       0.000532       11.92382        0.38237        1.00000     0
   55631.349337       0.000535       11.64716        0.37182        1.00000     0
   55631.350379       0.000506       12.28427        0.39389        1.00000     0
   55631.351380       0.000495       12.54322        0.40424        0.99415     0
   55631.351996       0.000122       10.22446        0.73368        1.00000     0
   55631.352630       0.000512       12.18674        0.38934        1.00000     0
   55631.353663       0.000521       11.86898        0.38187        1.00000     0
   55631.354844       0.000660       11.40852        0.33454        0.99561     0