/*
**
**  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
   54978.712242       0.000205       31.58079        1.00715        1.00000     0
   54978.712645       0.000197       32.47308        1.04252        1.00000     0
   54978.713050       0.000208       31.09830        0.99165        1.00000     0
   54978.713466       0.000208       30.70070        0.98937        1.00000     0
   54978.713883       0.000208       30.35008        0.97665        1.00000     0
   54978.714303       0.000211       30.11777        0.96464        1.00000     0
   54978.714716       0.000203       31.90243        1.02583        1.00000     0
   54978.715121       0.000203       31.39541        1.00879        1.00000     0
   54978.715532       0.000208       30.71376        0.99002        1.00000     0
   54978.715929       0.000188       34.10172        1.09103        1.00000     0
   54978.716322       0.000205       31.07837        0.99436        1.00000     0
   54978.716730       0.000203       31.85612        1.01666        1.00000     0
   54978.717127       0.000194       33.35867        1.06817        1.00000     0
   54978.717514       0.000194       33.27578        1.07630        1.00000     0
   54978.717911       0.000203       31.65904        1.01345        1.00000     0
   54978.718313       0.000200       31.94747        1.03460        1.00000     0
   54978.718712       0.000200       32.28923        1.02692        1.00000     0
   54978.719114       0.000203       31.26710        1.00190        1.00000     0
   54978.719528       0.000211       30.58545        0.97176        1.00000     0
   54978.719951       0.000211       30.43618        0.97182        1.00000     0
   54978.720362       0.000200       32.02505        1.02481        1.00000     0
   54978.720761       0.000200       32.11265        1.02525        1.00000     0
   54978.721160       0.000200       31.85210        1.01966        1.00000     0
   54978.721557       0.000197       32.45694        1.03856        1.00000     0
   54978.721959       0.000205       31.48197        1.00437        1.00000     0
   54978.722364       0.000200       32.47212        1.02334        1.00000     0
   54978.722772       0.000208       30.34445        0.97658        1.00000     0
   54978.723180       0.000200       31.85292        1.03132        1.00000     0
   54978.723585       0.000205       31.22298        0.99098        1.00000     0
   54978.724045       0.000255       31.26153        0.89406        1.00000     0