/*
**
**  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
   55554.462560       0.000344       18.46617        0.59026        1.00000     0
   55554.463237       0.000333       18.75317        0.60792        1.00000     0
   55554.463897       0.000327       19.44040        0.62546        1.00000     0
   55554.464559       0.000336       18.95919        0.60589        1.00000     0
   55554.465222       0.000327       19.39220        0.62111        1.00000     0
   55554.465870       0.000321       19.76675        0.63418        1.00000     0
   55554.466527       0.000336       18.95714        0.60734        1.00000     0
   55554.467187       0.000324       19.63995        0.63070        1.00000     0
   55554.467852       0.000341       18.65924        0.59176        1.00000     0
   55554.468544       0.000350       18.30685        0.58703        1.00000     0
   55554.469215       0.000321       19.70479        0.63334        1.00000     0
   55554.469863       0.000327       19.54205        0.62913        1.00000     0
   55554.470549       0.000359       17.69694        0.57059        1.00000     0
   55554.471240       0.000333       18.99992        0.60999        1.00000     0
   55554.471897       0.000324       19.57606        0.62659        1.00000     0
   55554.472557       0.000336       18.79617        0.60185        1.00000     0
   55554.473249       0.000356       19.71370        0.60602        1.00000     0