/*
**
**  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
   54952.965060       0.000324       19.38766        0.61644        1.00000     0
   54952.965720       0.000336       18.49979        0.59166        1.00000     0
   54952.966397       0.000341       18.08731        0.58220        1.00000     0
   54952.967056       0.000318       19.44658        0.62560        1.00000     0
   54952.967716       0.000341       18.44094        0.58599        1.00000     0
   54952.968396       0.000339       18.41013        0.59204        1.00000     0
   54952.969056       0.000321       19.40349        0.62300        1.00000     0
   54952.969713       0.000336       18.84856        0.60344        1.00000     0
   54952.970378       0.000330       19.01093        0.60711        1.00000     0
   54952.971052       0.000344       17.86696        0.57798        1.00000     0
   54952.971732       0.000336       18.56172        0.59542        1.00000     0
   54952.972392       0.000324       19.21334        0.61660        1.00000     0
   54952.973032       0.000315       19.72106        0.63146        1.00000     0
   54952.973686       0.000339       18.38327        0.59139        1.00000     0
   54952.974345       0.000321       19.35215        0.61951        1.00000     0
   54952.974999       0.000333       18.94644        0.60807        1.00000     0
   54952.975844       0.000512       19.26544        0.49089        1.00000     0