/*
**
**  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)
**   RawRate                  - Raw source count rate (cts/s)
**   RawError                 - 1 sigma error in the raw count rate (cts/s)
**   NetRate                  - Background subtracted count rate (cts/s)
**   NetError                 - 1 sigma error in the background subtracted count rate (cts/s)
**   BackRate                 - Background count rate (cts/s)
**   BackError                - 1 sigma error in the background count rate (cts/s)
**
**
**  Upper limits have an error listed as -1.00000.
**
*/
      BinCenter          BinHW           Rate      RateError        FracExp  Mode        RawRate       RawError        NetRate       NetError       BackRate      BackError
   55537.477019       0.000362       17.26961        0.55627        1.00000     0       16.07476        0.50757       15.85538        0.51072        0.21938        0.05664
   55537.477719       0.000339       18.48382        0.59268        1.00000     0       17.10540        0.54119       16.94915        0.54344        0.15625        0.04941
   55537.478399       0.000341       18.54885        0.59570        1.00000     0       16.99440        0.53714       16.80848        0.53982        0.18592        0.05367
   55537.479065       0.000324       19.40534        0.62995        1.00000     0       17.90481        0.56592       17.57835        0.57061        0.32646        0.07300
   55537.479753       0.000365       17.16503        0.55944        1.00000     0       15.96309        0.50379       15.61486        0.50878        0.34822        0.07108
   55537.480459       0.000341       18.18163        0.58909        1.00000     0       17.01138        0.53741       16.71701        0.54164        0.29437        0.06753
   55537.481171       0.000370       16.77476        0.54218        1.00000     0       15.63541        0.49468       15.40689        0.49797        0.22852        0.05713
   55537.481897       0.000356       17.59760        0.56765        1.00000     0       16.41758        0.51711       16.15004        0.52094        0.26754        0.06306
   55537.482606       0.000353       17.49654        0.56841        1.00000     0       16.45362        0.51979       16.13894        0.52431        0.31469        0.06867
   55537.483321       0.000362       17.51908        0.56036        1.00000     0       16.17093        0.50908       15.99542        0.51160        0.17550        0.05066
   55537.484039       0.000356       17.90741        0.57440        1.00000     0       16.38500        0.51659       16.19178        0.51936        0.19322        0.05359
   55537.484733       0.000339       18.71958        0.59962        1.00000     0       17.13965        0.54173       16.98339        0.54398        0.15625        0.04941
   55537.485433       0.000362       17.31187        0.56086        1.00000     0       16.10682        0.50807       15.81431        0.51227        0.29251        0.06541
   55537.486136       0.000341       18.29531        0.58444        1.00000     0       16.99440        0.53714       16.87045        0.53893        0.12394        0.04382
   55537.486811       0.000333       18.82361        0.61117        1.00000     0       17.47257        0.55170       17.13873        0.55649        0.33384        0.07285
   55537.487488       0.000344       18.27838        0.58833        1.00000     0       16.95259        0.53422       16.70679        0.53774        0.24580        0.06145
   55537.488185       0.000353       17.77131        0.56840        1.00000     0       16.56857        0.52160       16.38875        0.52418        0.17982        0.05191
   55537.489044       0.000506       18.76671        0.49228        1.00000     0       17.29737        0.44499       17.06754        0.44768        0.22983        0.04900