/*
**
**  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
   55647.270061       0.000408       15.62274        0.50327        1.00000     0
   55647.270848       0.000379       16.71682        0.53587        1.00000     0
   55647.271624       0.000396       15.85320        0.50940        1.00000     0
   55647.272411       0.000391       16.19893        0.51895        1.00000     0
   55647.273195       0.000394       15.91975        0.51233        1.00000     0
   55647.273988       0.000399       15.64574        0.50469        1.00000     0
   55647.274792       0.000405       15.51018        0.49761        1.00000     0
   55647.275593       0.000396       15.60235        0.51091        1.00000     0
   55647.276392       0.000402       15.47652        0.50182        1.00000     0
   55647.277188       0.000394       15.90656        0.51590        1.00000     0
   55647.277963       0.000382       16.41043        0.52812        1.00000     0
   55647.278765       0.000420       15.03569        0.48102        1.00000     0
   55647.279584       0.000399       15.63539        0.50579        1.00000     0
   55647.280382       0.000399       15.58970        0.50549        1.00000     0
   55647.281239       0.000457       15.34671        0.46720        1.00000     0