/*
**
**  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
   55972.321508       0.000399       16.10682        0.51998        1.00000     0
   55972.322315       0.000408       15.60100        0.50458        1.00000     0
   55972.323131       0.000408       15.54021        0.50611        1.00000     0
   55972.323976       0.000437       14.60660        0.47093        1.00000     0
   55972.324827       0.000414       15.38807        0.49890        1.00000     0
   55972.325666       0.000425       15.12323        0.48401        1.00000     0
   55972.326496       0.000405       15.88209        0.51096        0.99286     0
   55972.327315       0.000414       15.35558        0.49797        1.00000     0
   55972.328149       0.000420       15.18682        0.49093        1.00000     0
   55972.328993       0.000425       14.93757        0.48480        1.00000     0
   55972.329818       0.000399       16.00443        0.51614        1.00000     0
   55972.330654       0.000437       14.54430        0.47166        1.00000     0
   55972.331505       0.000414       15.78690        0.50301        1.00000     0