/*
**
**  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
   56768.932918       0.000388       16.05774        0.51700        1.00000     0       14.96520        0.47300       14.76237        0.47529        0.20283        0.04653
   56768.933708       0.000402       15.55969        0.50108        1.00000     0       14.39806        0.45553       14.21282        0.45762        0.18524        0.04366
   56768.934547       0.000437       14.28509        0.45945        1.00000     0       13.30691        0.42017       13.12692        0.42220        0.17999        0.04129
   56768.935375       0.000391       15.85781        0.51252        1.00000     0       14.88403        0.46997       14.62972        0.47283        0.25431        0.05191
   56768.936156       0.000391       15.98451        0.51294        1.00000     0       14.83951        0.46927       14.68056        0.47106        0.15894        0.04104
   56768.936937       0.000391       15.91310        0.51339        1.00000     0       14.82467        0.46903       14.61275        0.47142        0.21192        0.04739
   56768.937745       0.000417       15.01785        0.48084        1.00000     0       14.02333        0.44169       13.85446        0.44359        0.16888        0.04096
   56768.938552       0.000391       15.93964        0.51166        1.00000     0       14.88403        0.46997       14.70389        0.47200        0.18013        0.04369
   56768.939472       0.000524       15.68419        0.44111        0.99721     0       14.72855        0.40432       14.46701        0.40687        0.26154        0.04553