/*
**
**  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
   55974.323739       0.000119       13.47766        0.95457        1.00000     0
   55974.323977       0.000119       13.11297        0.93771        1.00000     0
   55974.324217       0.000122       12.59264        0.90699        1.00000     0
   55974.324463       0.000124       12.16241        0.86202        1.00000     0
   55974.325114       0.000527       13.86886        0.44768        1.00000     0
   55974.326213       0.000573       12.72565        0.41173        1.00000     0
   55974.327333       0.000547       13.56017        0.43508        0.99471     0
   55974.328314       0.000434       12.57145        0.47026        1.00000     0
   55974.329309       0.000561       12.76739        0.41475        1.00000     0
   55974.330423       0.000553       13.44911        0.42891        1.00000     0
   55974.331193       0.000217       12.76088        0.66802        1.00000     0
   55974.331529       0.000119       12.39215        0.89429        1.00000     0
   55974.331775       0.000127       12.51794        0.86597        1.00000     0
   55974.332023       0.000122       11.72932        0.85741        1.00000     0
   55974.332701       0.000556       13.12127        0.42383        1.00000     0
   55974.333380       0.000124       12.52823        0.87147        1.00000     0
   55974.333626       0.000122       12.05152        0.86176        1.00000     0
   55974.334289       0.000541       13.53444        0.43905        0.99465     0
   55974.335814       0.000984       13.61608        0.32425        1.00000     0