/*
**
**  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
   54968.948627       0.000339       18.56776        0.59406        1.00000     0
   54968.949319       0.000353       17.53553        0.56249        1.00000     0
   54968.950025       0.000353       17.72419        0.56833        0.99180     0
   54968.950722       0.000344       17.95721        0.57568        1.00000     0
   54968.951419       0.000353       17.61221        0.56576        1.00000     0
   54968.952261       0.000489       18.27914        0.58738        0.69232     0
   54968.953092       0.000341       18.01555        0.58271        1.00000     0
   54968.953775       0.000341       18.25681        0.58489        1.00000     0
   54968.954472       0.000356       17.33179        0.55747        1.00000     0
   54968.955178       0.000350       17.63206        0.56651        1.00000     0
   54968.955887       0.000359       17.26068        0.55214        1.00000     0
   54968.956619       0.000373       16.59571        0.53301        1.00000     0
   54968.957319       0.000327       18.86469        0.60678        1.00000     0
   54968.958315       0.000668       17.72542        0.41066        1.00000     0