/*
**
**  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
   55642.987073       0.000446       14.77124        0.47575        1.00000     0
   55642.987956       0.000437       15.11671        0.48967        0.99338     0
   55642.988850       0.000457       14.38939        0.46421        1.00000     0
   55642.989735       0.000428       15.15991        0.49330        1.00000     0
   55642.990598       0.000434       14.91331        0.48489        1.00000     0
   55642.991469       0.000437       14.92473        0.48664        1.00000     0
   55642.992339       0.000434       15.03931        0.48575        1.00000     0
   55642.993219       0.000446       14.74702        0.47669        0.99351     0
   55642.994099       0.000434       14.99162        0.48395        1.00000     0
   55642.994967       0.000434       15.12703        0.48608        1.00000     0
   55642.995823       0.000422       15.56680        0.49882        1.00000     0
   55642.996680       0.000434       14.95707        0.48695        1.00000     0
   55642.997565       0.000451       14.45207        0.47359        1.00000     0
   55642.998465       0.000448       14.47994        0.47178        1.00000     0
   55642.999446       0.000532       14.63658        0.43537        1.00000     0