/*
**
**  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
   55220.277582       0.000362       39.98559        1.33570        1.00000     0
   55220.278299       0.000356       42.86172        1.41492        1.00000     0
   55220.279037       0.000382       41.27392        1.36170        1.00000     0
   55220.279801       0.000382       40.57734        1.35056        1.00000     0
   55220.280551       0.000367       42.83353        1.39567        1.00000     0
   55220.281286       0.000367       42.46876        1.39425        1.00000     0
   55220.282009       0.000356       43.78646        1.44094        1.00000     0
   55220.282744       0.000379       41.03162        1.35373        1.00000     0
   55220.283499       0.000376       41.59786        1.36935        1.00000     0
   55220.284234       0.000359       43.33243        1.43535        1.00000     0
   55220.284946       0.000353       44.07761        1.45529        1.00000     0
   55220.285663       0.000365       42.88748        1.40872        1.00000     0
   55220.286398       0.000370       42.13018        1.37970        1.00000     0
   55220.287107       0.000339       45.59825        1.51973        1.00000     0
   55220.287805       0.000359       43.19391        1.43041        1.00000     0
   55220.288511       0.000347       44.73846        1.46771        1.00000     0
   55220.289546       0.000689       44.13892        1.04074        1.00000     0