/*
**
**  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
   55539.470132       0.000286       23.44936        0.75938        1.00000     0
   55539.470719       0.000301       22.71884        0.72927        1.00000     0
   55539.471460       0.000440       23.28492        0.74746        0.65789     0
   55539.472183       0.000284       23.86390        0.76745        1.00000     0
   55539.472742       0.000275       24.10866        0.78151        1.00000     0
   55539.473297       0.000281       23.95584        0.77204        1.00000     0
   55539.473856       0.000278       24.26601        0.78593        1.00000     0
   55539.474408       0.000275       24.15675        0.78682        1.00000     0
   55539.474952       0.000269       25.07360        0.80352        1.00000     0
   55539.475488       0.000266       25.44627        0.82431        1.00000     0
   55539.476029       0.000275       24.92294        0.80585        1.00000     0
   55539.476584       0.000281       24.06274        0.77867        1.00000     0
   55539.477143       0.000278       24.15654        0.76994        1.00000     0
   55539.477690       0.000269       24.73508        0.80636        1.00000     0
   55539.478236       0.000278       24.12086        0.77995        1.00000     0
   55539.478809       0.000295       23.22686        0.74126        1.00000     0
   55539.479397       0.000292       23.23765        0.75006        1.00000     0
   55539.479973       0.000284       23.64066        0.76915        1.00000     0
   55539.480517       0.000260       26.18180        0.84766        1.00000     0
   55539.481040       0.000263       25.85569        0.83028        1.00000     0
   55539.481573       0.000269       25.04265        0.80916        1.00000     0
   55539.482114       0.000272       25.47459        0.82673        0.97873     0
   55539.482854       0.000469       24.02914        0.60781        0.98791     0