/*
**
**  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
   56677.168641       0.000498       12.42541        0.40321        1.00000     0
   56677.169634       0.000495       12.57237        0.40787        1.00000     0
   56677.170647       0.000518       11.94598        0.38447        1.00000     0
   56677.171674       0.000509       12.19922        0.39421        1.00000     0
   56677.172704       0.000521       11.95502        0.38449        1.00000     0
   56677.173708       0.000483       12.96144        0.41141        1.00000     0
   56677.174686       0.000495       12.48418        0.40350        1.00000     0
   56677.175690       0.000509       12.15194        0.39173        1.00000     0
   56677.176694       0.000495       12.54231        0.40517        1.00000     0
   56677.177672       0.000483       12.80449        0.41210        1.00000     0
   56677.178615       0.000460       12.26919        0.41154        1.00000     0