/*
**
**  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
   57721.255595       0.000159        8.20046        0.58260        1.00000     0
   57721.255919       0.000165        7.95181        0.56877        1.00000     0
   57721.256237       0.000153        8.39381        0.61009        1.00000     0
   57721.256550       0.000159        8.09800        0.58311        1.00000     0
   57721.256885       0.000177        7.25891        0.52653        1.00000     0
   57721.257221       0.000159        8.21180        0.58282        1.00000     0
   57721.257533       0.000153        8.66637        0.61196        1.00000     0
   57721.257875       0.000188        7.11212        0.50742        0.98462     0
   57721.258263       0.000200        6.63388        0.47352        0.98551     0
   57721.258633       0.000171        7.56096        0.54500        1.00000     0
   57721.258969       0.000165        7.89621        0.56302        1.00000     0
   57721.259304       0.000171        7.49907        0.54650        1.00000     0
   57721.259628       0.000153        8.44726        0.60669        1.00000     0
   57721.259944       0.000162        8.07497        0.57993        1.00000     0
   57721.260291       0.000185        7.08932        0.50862        0.98438     0
   57721.260638       0.000162        7.95203        0.57260        1.00000     0
   57721.260974       0.000174        7.72247        0.54843        0.98333     0
   57721.261292       0.000145        8.92068        0.64603        1.00000     0
   57721.261610       0.000174        7.43373        0.53835        1.00000     0
   57721.261958       0.000174        7.59046        0.54260        0.98333     0
   57721.262305       0.000174        7.70623        0.54319        1.00000     0
   57721.262658       0.000179        7.30103        0.51683        1.00000     0
   57721.263002       0.000165        8.01547        0.56721        1.00000     0
   57721.263332       0.000165        7.82913        0.56434        1.00000     0
   57721.263656       0.000159        8.23762        0.58922        1.00000     0
   57721.263966       0.000150        8.82579        0.62930        0.98077     0
   57721.264284       0.000168        7.63134        0.55354        1.00000     0
   57721.264651       0.000200        6.61327        0.47375        0.98551     0
   57721.265010       0.000159        8.11521        0.58222        1.00000     0
   57721.265340       0.000171        7.77703        0.55511        0.98305     0
   57721.265734       0.000223        7.32452        0.46674        1.00000     0