/*
**
**  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
   55839.940246       0.000281       23.88944        0.76185        1.00000     0
   55839.940816       0.000289       23.15179        0.74037        1.00000     0
   55839.941383       0.000278       24.07498        0.76711        1.00000     0
   55839.941945       0.000284       23.36670        0.74967        1.00000     0
   55839.942512       0.000284       23.50903        0.74814        1.00000     0
   55839.943070       0.000275       24.15647        0.77284        1.00000     0
   55839.943623       0.000278       23.84386        0.76653        1.00000     0
   55839.944184       0.000284       23.47708        0.75034        1.00000     0
   55839.944743       0.000275       24.45902        0.77582        1.00000     0
   55839.945307       0.000289       22.77044        0.73428        1.00000     0
   55839.945868       0.000272       24.41177        0.78101        1.00000     0
   55839.946404       0.000263       25.49279        0.80942        1.00000     0
   55839.946953       0.000286       23.10348        0.74272        1.00000     0
   55839.947529       0.000289       22.88130        0.73466        1.00000     0
   55839.948102       0.000284       23.47845        0.74905        1.00000     0
   55839.948660       0.000275       24.23862        0.77409        1.00000     0
   55839.949216       0.000281       23.50771        0.75765        1.00000     0
   55839.949783       0.000286       23.38560        0.74345        1.00000     0
   55839.950368       0.000298       22.29671        0.71478        1.00000     0
   55839.950958       0.000292       22.76433        0.73049        1.00000     0
   55839.951542       0.000292       22.90651        0.72969        1.00000     0
   55839.952107       0.000272       24.48494        0.78275        1.00000     0
   55839.952911       0.000532       23.63098        0.54978        1.00000     0