/*
**
**  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
   55640.106543       0.000492       13.20893        0.42756        1.00000     0
   55640.107498       0.000463       14.19118        0.46196        1.00000     0
   55640.108430       0.000469       14.11871        0.45504        1.00000     0
   55640.109362       0.000463       14.22157        0.45606        1.00000     0
   55640.110299       0.000475       14.02509        0.45216        1.00000     0
   55640.111286       0.000512       12.94754        0.41778        1.00000     0
   55640.112270       0.000472       14.09724        0.45512        1.00000     0
   55640.113248       0.000506       13.10612        0.42493        1.00000     0
   55640.114228       0.000475       14.02935        0.45133        1.00000     0
   55640.115180       0.000477       13.93738        0.44635        1.00000     0
   55640.116135       0.000477       13.85294        0.44830        1.00000     0
   55640.117070       0.000457       14.52915        0.47133        0.99367     0
   55640.118123       0.000596       14.24661        0.40758        1.00000     0