/*
**
**  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
   56268.418022       0.000492       13.85798        0.44645        0.99412     0       11.84220        0.37467       11.70230        0.37667        0.13990        0.03880
   56268.418971       0.000457       14.63317        0.47158        1.00000     0       12.70470        0.40136       12.53203        0.40383        0.17267        0.04458
   56268.419909       0.000480       14.15194        0.45627        1.00000     0       12.14070        0.38278       11.95444        0.38543        0.18626        0.04517
   56268.420863       0.000475       14.09285        0.45752        1.00000     0       12.25211        0.38687       12.01922        0.39019        0.23289        0.05082
   56268.421810       0.000472       14.19248        0.45928        1.00000     0       12.33956        0.38943       12.12756        0.39246        0.21200        0.04864
   56268.422715       0.000434       15.39199        0.50144        1.00000     0       13.34221        0.42213       13.07546        0.42594        0.26675        0.05687
   56268.423580       0.000431       15.67617        0.50639        1.00000     0       13.51243        0.42624       13.29272        0.42937        0.21972        0.05179
   56268.424448       0.000437       15.21499        0.49275        1.00000     0       13.33346        0.42059       13.09256        0.42403        0.24090        0.05387
   56268.425345       0.000460       14.51839        0.46823        1.00000     0       12.63739        0.39903       12.45437        0.40165        0.18302        0.04575
   56268.426260       0.000454       14.88424        0.47832        1.00000     0       12.82390        0.40452       12.66172        0.40683        0.16218        0.04334
   56268.427180       0.000466       14.46474        0.46490        1.00000     0       12.46796        0.39388       12.32111        0.39598        0.14686        0.04073
   56268.428398       0.000752       14.82845        0.37330        1.00000     0       12.89069        0.31516       12.63187        0.31802        0.25882        0.04255