/*
**
**  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
   55581.359286       0.000469       13.54776        0.43898        1.00000     0       12.39100        0.39145       12.17920        0.39462        0.21181        0.04992
   55581.360232       0.000477       13.63013        0.43628        1.00000     0       12.15357        0.38414       12.04959        0.38570        0.10398        0.03466
   55581.361192       0.000483       13.40619        0.43446        1.00000     0       12.02001        0.37973       11.81455        0.38280        0.20547        0.04843
   55581.362142       0.000466       14.09471        0.45475        0.99379     0       12.54589        0.39634       12.36718        0.39902        0.17871        0.04614
   55581.363094       0.000486       13.41450        0.43033        1.00000     0       12.02001        0.37859       11.87251        0.38080        0.14751        0.04091
   55581.364054       0.000475       13.65138        0.44193        1.00000     0       12.22768        0.38648       12.03008        0.38944        0.19760        0.04793
   55581.365006       0.000477       13.60582        0.44260        1.00000     0       12.14143        0.38395       11.91037        0.38741        0.23106        0.05167
   55581.365932       0.000448       14.64228        0.46867        1.00000     0       12.97645        0.40953       12.85346        0.41138        0.12298        0.03889
   55581.366832       0.000451       14.39934        0.46664        1.00000     0       12.82905        0.40589       12.62132        0.40901        0.20773        0.05038
   55581.367738       0.000454       14.29891        0.46159        1.00000     0       12.81114        0.40432       12.61687        0.40722        0.19427        0.04857
   55581.368649       0.000457       14.20581        0.46415        1.00000     0       12.70470        0.40136       12.41514        0.40569        0.28956        0.05911
   55581.369971       0.000865       13.14124        0.32276        1.00000     0       11.67831        0.27972       11.48067        0.28197        0.19764        0.03550