/*
**
**  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
   57550.825645       0.000191       32.64074        1.04021        1.00000     0
   57550.826024       0.000188       33.43545        1.06826        1.00000     0
   57550.826394       0.000182       34.69146        1.10458        1.00000     0
   57550.826773       0.000197       31.91756        1.01469        1.00000     0
   57550.827161       0.000191       32.65617        1.04186        1.00000     0
   57550.827540       0.000188       32.88036        1.05985        1.00000     0
   57550.827925       0.000197       31.53700        1.00872        1.00000     0
   57550.828304       0.000182       33.87767        1.08903        1.00000     0
   57550.828669       0.000182       34.25452        1.09494        1.00000     0
   57550.829036       0.000185       34.34237        1.09698        1.00000     0
   57550.829418       0.000197       31.58196        1.01178        1.00000     0
   57550.829797       0.000182       34.49118        1.09771        1.00000     0
   57550.830173       0.000194       32.51443        1.02910        1.00000     0
   57550.830558       0.000191       32.88481        1.04544        1.00000     0
   57550.830949       0.000200       31.23817        0.99743        1.00000     0
   57550.831339       0.000191       32.88762        1.04637        1.00000     0
   57550.831716       0.000185       33.78347        1.07792        1.00000     0
   57550.832092       0.000191       32.64958        1.03996        1.00000     0
   57550.832471       0.000188       33.20859        1.05412        1.00000     0
   57550.832841       0.000182       34.04232        1.08974        1.00000     0
   57550.833212       0.000188       33.09419        1.05777        1.00000     0
   57550.833588       0.000188       33.04928        1.06339        1.00000     0
   57550.833967       0.000191       32.67926        1.04931        1.00000     0
   57550.834352       0.000194       31.97165        1.02232        1.00000     0
   57550.834739       0.000194       32.24998        1.03282        1.00000     0
   57550.835127       0.000194       32.06485        1.02289        1.00000     0
   57550.835509       0.000188       33.20052        1.06125        1.00000     0
   57550.835885       0.000188       33.21524        1.05605        1.00000     0
   57550.836267       0.000194       32.19463        1.02495        1.00000     0
   57550.836739       0.000278       33.50817        0.87868        1.00000     0