/*
**
**  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
   55217.319164       0.000182       35.42230        1.13690        1.00000     0
   55217.319543       0.000197       33.29418        1.07401        1.00000     0
   55217.319931       0.000191       33.97582        1.08927        1.00000     0
   55217.320313       0.000191       33.78003        1.08151        1.00000     0
   55217.320697       0.000194       33.05666        1.06130        1.00000     0
   55217.321088       0.000197       32.61078        1.05157        1.00000     0
   55217.321482       0.000197       32.51970        1.04772        1.00000     0
   55217.321875       0.000197       32.96657        1.05729        1.00000     0
   55217.322263       0.000191       34.04281        1.08563        1.00000     0
   55217.322654       0.000200       32.42593        1.03353        1.00000     0
   55217.323038       0.000185       34.59299        1.11245        1.00000     0
   55217.323420       0.000197       32.40984        1.04751        1.00000     0
   55217.323811       0.000194       33.29827        1.06868        1.00000     0
   55217.324196       0.000191       33.63679        1.07970        1.00000     0
   55217.324583       0.000197       33.01000        1.05659        1.00000     0
   55217.324968       0.000188       33.97606        1.09876        1.00000     0
   55217.325353       0.000197       32.54483        1.05308        1.00000     0
   55217.325744       0.000194       32.91722        1.06854        1.00000     0
   55217.326126       0.000188       34.11636        1.09987        1.00000     0
   55217.326505       0.000191       33.59348        1.07863        1.00000     0
   55217.326881       0.000185       34.99660        1.11883        1.00000     0
   55217.327272       0.000205       31.38243        1.00230        1.00000     0
   55217.327665       0.000188       34.51715        1.10788        1.00000     0
   55217.328041       0.000188       34.19792        1.10106        1.00000     0
   55217.328423       0.000194       32.96515        1.06237        1.00000     0
   55217.328808       0.000191       33.48935        1.07783        1.00000     0
   55217.329193       0.000194       33.65077        1.06789        1.00000     0
   55217.329589       0.000203       31.68823        1.01933        1.00000     0
   55217.329986       0.000194       33.10371        1.07015        1.00000     0
   55217.330373       0.000194       33.94083        1.08897        1.00000     0
   55217.330903       0.000336       32.77189        0.80818        1.00000     0