/*
**
**  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
   57873.873697       0.000185       35.07119        1.13286        1.00000     0
   57873.874087       0.000205       33.65796        1.07667        1.00000     0
   57873.874498       0.000205       32.74366        1.05508        1.00000     0
   57873.874894       0.000191       34.47262        1.10898        1.00000     0
   57873.875274       0.000188       35.27897        1.13389        1.00000     0
   57873.875664       0.000203       32.81625        1.05281        1.00000     0
   57873.876063       0.000197       33.57358        1.07957        1.00000     0
   57873.876463       0.000203       32.85176        1.05059        1.00000     0
   57873.876848       0.000182       36.58582        1.16447        1.00000     0
   57873.877218       0.000188       34.88774        1.13103        1.00000     0
   57873.877603       0.000197       33.84747        1.08705        1.00000     0
   57873.877993       0.000194       34.11701        1.09792        1.00000     0
   57873.878378       0.000191       34.81693        1.12110        1.00000     0
   57873.878760       0.000191       34.48088        1.11372        1.00000     0
   57873.879139       0.000188       35.17515        1.13229        1.00000     0
   57873.879521       0.000194       34.22160        1.09464        1.00000     0
   57873.879903       0.000188       35.00794        1.12861        1.00000     0
   57873.880285       0.000194       34.44433        1.09839        1.00000     0
   57873.880673       0.000194       34.15872        1.09726        1.00000     0
   57873.881058       0.000191       34.40925        1.11257        1.00000     0
   57873.881445       0.000197       33.70858        1.07562        1.00000     0
   57873.881833       0.000191       34.32034        1.11084        1.00000     0
   57873.882201       0.000177       37.59996        1.20016        1.00000     0
   57873.882571       0.000194       34.11073        1.09363        1.00000     0
   57873.882950       0.000185       36.07888        1.14810        1.00000     0
   57873.883332       0.000197       33.70319        1.07892        1.00000     0
   57873.883726       0.000197       33.81878        1.08128        1.00000     0
   57873.884107       0.000185       35.64511        1.14560        1.00000     0
   57873.884475       0.000182       35.96396        1.16159        1.00000     0
   57873.884851       0.000194       34.14491        1.09913        1.00000     0
   57873.885233       0.000188       35.03885        1.13056        1.00000     0