/*
**
**  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
   55566.369947       0.000301       21.55119        0.69944        1.00000     0
   55566.370549       0.000301       21.45502        0.69712        1.00000     0
   55566.371156       0.000307       21.07279        0.68396        1.00000     0
   55566.371761       0.000298       21.81639        0.70105        1.00000     0
   55566.372357       0.000298       21.86362        0.70036        1.00000     0
   55566.372959       0.000304       21.68465        0.69630        0.99048     0
   55566.373564       0.000301       21.44845        0.69597        1.00000     0
   55566.374160       0.000295       21.99365        0.70691        1.00000     0
   55566.374779       0.000324       20.11344        0.64823        1.00000     0
   55566.375398       0.000295       22.18203        0.71004        1.00000     0
   55566.375983       0.000289       22.50402        0.72335        1.00000     0
   55566.376573       0.000301       21.49690        0.69368        1.00000     0
   55566.377184       0.000310       21.05396        0.67800        1.00000     0
   55566.377994       0.000501       21.75253        0.54143        0.99780     0
   55566.441504       0.000330       21.77216        0.70510        0.99997     0
   55566.442155       0.000321       22.12144        0.71364        1.00000     0
   55566.442765       0.000289       23.99735        0.77104        1.00000     0
   55566.443367       0.000312       22.17336        0.71451        1.00000     0
   55566.443992       0.000312       22.21916        0.71756        1.00000     0
   55566.444620       0.000315       22.08554        0.71413        0.99083     0
   55566.445262       0.000327       21.27402        0.68502        1.00000     0
   55566.445893       0.000304       22.72576        0.73569        1.00000     0
   55566.446489       0.000292       23.88999        0.76112        1.00000     0
   55566.447088       0.000307       22.53762        0.72637        1.00000     0
   55566.447725       0.000330       20.90740        0.67328        1.00000     0
   55566.448353       0.000298       23.17837        0.74766        1.00000     0
   55566.448954       0.000304       22.84818        0.73422        1.00000     0
   55566.449608       0.000350       21.16569        0.66094        1.00000     0