/*
**
**  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
   55557.815269       0.000535       11.49487        0.37524        1.00000     0
   55557.816337       0.000532       11.64161        0.37530        1.00000     0
   55557.817385       0.000515       12.04436        0.38779        1.00000     0
   55557.818400       0.000501       12.39697        0.39975        1.00000     0
   55557.819028       0.000127        9.73216        0.70403        1.00000     0
   55557.819682       0.000527       11.72428        0.37904        1.00000     0
   55557.820741       0.000532       11.62615        0.37660        1.00000     0
   55557.821812       0.000538       11.39443        0.37299        1.00000     0
   55557.822853       0.000503       12.25491        0.39730        1.00000     0
   55557.823872       0.000515       11.98279        0.38906        1.00000     0
   55557.825374       0.000987       12.09084        0.28170        1.00000     0