/*
**
**  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
   56669.166533       0.000532       12.03623        0.38665        0.99457     0
   56669.167600       0.000535       11.97613        0.38679        1.00000     0
   56669.168254       0.000119       10.88069        0.77702        1.00000     0
   56669.168902       0.000530       12.09873        0.38905        1.00000     0
   56669.169958       0.000527       12.17656        0.39273        1.00000     0
   56669.171046       0.000561       11.45714        0.36632        1.00000     0
   56669.172146       0.000538       12.02040        0.38449        1.00000     0
   56669.172803       0.000119       11.06295        0.79347        1.00000     0
   56669.173460       0.000538       11.95931        0.38535        0.99462     0
   56669.174484       0.000486       13.26373        0.42670        1.00000     0
   56669.175262       0.000292       11.09216        0.50346        1.00000     0
   56669.176298       0.000744       12.04389        0.32714        1.00000     0