/*
**
**  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
   55537.477019       0.000362       17.26961        0.55627        1.00000     0
   55537.477719       0.000339       18.48382        0.59268        1.00000     0
   55537.478399       0.000341       18.54885        0.59570        1.00000     0
   55537.479065       0.000324       19.40534        0.62995        1.00000     0
   55537.479753       0.000365       17.16503        0.55944        1.00000     0
   55537.480459       0.000341       18.18163        0.58909        1.00000     0
   55537.481171       0.000370       16.77476        0.54218        1.00000     0
   55537.481897       0.000356       17.59760        0.56765        1.00000     0
   55537.482606       0.000353       17.49654        0.56841        1.00000     0
   55537.483321       0.000362       17.51908        0.56036        1.00000     0
   55537.484039       0.000356       17.90741        0.57440        1.00000     0
   55537.484733       0.000339       18.71958        0.59962        1.00000     0
   55537.485433       0.000362       17.31187        0.56086        1.00000     0
   55537.486136       0.000341       18.29531        0.58444        1.00000     0
   55537.486811       0.000333       18.82361        0.61117        1.00000     0
   55537.487488       0.000344       18.27838        0.58833        1.00000     0
   55537.488185       0.000353       17.77131        0.56840        1.00000     0
   55537.489044       0.000506       18.76671        0.49228        1.00000     0