/*
**
**  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
   54974.857071       0.000333       24.30489        0.78707        1.00000     0
   54974.857817       0.000414       19.79988        0.65129        1.00000     0
   54974.858752       0.000521       23.45196        0.66111        0.99638     0
   54974.895743       0.000237       26.10352        0.84650        0.99280     0
   54974.896212       0.000231       26.88706        0.86174        1.00000     0
   54974.896695       0.000252       24.70547        0.79642        1.00000     0
   54974.897178       0.000231       26.80098        0.86504        1.00000     0
   54974.897661       0.000252       24.85644        0.79640        1.00000     0
   54974.898162       0.000249       25.19187        0.80160        1.00000     0
   54974.898645       0.000234       26.64010        0.84898        1.00000     0
   54974.899128       0.000249       25.16030        0.80989        1.00000     0
   54974.899614       0.000237       26.19711        0.84397        1.00000     0
   54974.900098       0.000246       25.50872        0.81891        1.00000     0
   54974.900598       0.000255       24.21852        0.78414        1.00000     0
   54974.901090       0.000237       26.41229        0.84414        1.00000     0
   54974.901588       0.000260       24.00289        0.76709        1.00000     0
   54974.902083       0.000234       26.48950        0.85172        1.00000     0
   54974.902560       0.000243       25.31824        0.81992        1.00000     0
   54974.903049       0.000246       25.40081        0.81519        1.00000     0
   54974.903541       0.000246       25.36363        0.81141        1.00000     0
   54974.904154       0.000367       25.76616        0.67014        1.00000     0