/*
**
**  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
   59239.148968       0.000211        7.88612        0.56675        0.98630     0        5.70392        0.39838        5.56735        0.39961        0.13657        0.03133
   59239.149420       0.000240        7.43872        0.53537        1.00000     0        4.82730        0.34134        4.75247        0.34202        0.07482        0.02160
   59239.149894       0.000234        7.42769        0.54412        0.95062     0        5.25548        0.36977        5.07402        0.37142        0.18147        0.03492
   59239.150380       0.000252        6.46081        0.47621        0.97701     0        4.71371        0.33331        4.54324        0.33486        0.17047        0.03222
   59239.151017       0.000385        6.47937        0.38109        0.99909     0        4.64349        0.26459        4.51497        0.26553        0.12852        0.02237
   59239.194437       0.000188        7.31530        0.53486        0.99700     0        6.18262        0.43718        6.02045        0.44017        0.16216        0.05128
   59239.194830       0.000205        7.04478        0.50761        0.98592     0        5.80965        0.40776        5.68955        0.40996        0.12010        0.04246
   59239.195241       0.000205        6.76047        0.48904        1.00000     0        5.75604        0.40300        5.60803        0.40571        0.14801        0.04681
   59239.195652       0.000205        6.50675        0.48221        1.00000     0        5.64318        0.39903        5.43596        0.40286        0.20722        0.05538
   59239.196199       0.000341        6.36768        0.37196        0.97595     0        5.47967        0.30874        5.32453        0.31103        0.15513        0.03762