/*
**
**  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
   55272.946912       0.000347       33.18623        2.52229        0.94167     0
   55272.947589       0.000330       29.62452        2.20017        0.95614     0
   55272.948203       0.000284       31.21275        2.25222        0.97959     0
   55272.948770       0.000284       30.43126        2.23075        0.95918     0
   55272.949360       0.000301       28.13317        2.02780        0.98077     0
   55272.949930       0.000263       33.36709        2.43598        0.97802     0
   55272.950480       0.000286       31.34099        2.33312        0.94949     0
   55272.951065       0.000298       30.60498        2.24441        0.97087     0
   55272.951606       0.000243       37.21458        2.68333        0.97619     0
   55272.952303       0.000454       30.55855        1.81558        0.96504     0