/*
**
**  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
   55178.230325       0.000185       33.76591        1.07171        1.00000     0
   55178.230698       0.000188       32.83109        1.05179        1.00000     0
   55178.231080       0.000194       31.89959        1.02818        1.00000     0
   55178.231465       0.000191       32.52607        1.03830        1.00000     0
   55178.231841       0.000185       33.39545        1.07349        1.00000     0
   55178.232370       0.000344       32.46352        1.02600        0.56304     0
   55178.232903       0.000188       32.87940        1.05614        1.00000     0
   55178.233296       0.000205       30.05975        0.96536        1.00000     0
   55178.233687       0.000185       33.48615        1.07397        1.00000     0
   55178.234054       0.000182       34.03381        1.08779        1.00000     0
   55178.234428       0.000191       33.06633        1.05336        1.00000     0
   55178.234807       0.000188       33.80628        1.06852        1.00000     0
   55178.235177       0.000182       34.50586        1.10670        1.00000     0
   55178.235556       0.000197       31.85497        1.01140        1.00000     0
   55178.235944       0.000191       32.89355        1.05559        1.00000     0
   55178.236320       0.000185       34.00073        1.08515        1.00000     0
   55178.236699       0.000194       32.65147        1.04265        1.00000     0
   55178.237072       0.000179       35.21234        1.12222        1.00000     0
   55178.237437       0.000185       33.77591        1.07526        1.00000     0
   55178.237810       0.000188       33.02674        1.06273        1.00000     0
   55178.238180       0.000182       34.43929        1.10137        1.00000     0
   55178.238554       0.000191       32.73077        1.04641        1.00000     0
   55178.238924       0.000179       34.43697        1.11088        1.00000     0
   55178.239292       0.000188       33.23450        1.06250        1.00000     0
   55178.239662       0.000182       33.71883        1.08806        1.00000     0
   55178.240026       0.000182       34.26599        1.08972        1.00000     0
   55178.240391       0.000182       34.74249        1.10920        1.00000     0
   55178.240770       0.000197       31.67666        1.01557        1.00000     0
   55178.241308       0.000341       34.07982        0.79817        1.00000     0