/*
**
**  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
   55236.060646       0.000336       28.47968        0.92665        1.00000     0       17.28737        0.54640       16.97234        0.55092        0.31502        0.07044
   55236.061323       0.000341       28.19989        0.91564        1.00000     0       16.99436        0.53714       16.70016        0.54136        0.29420        0.06749
   55236.061997       0.000333       26.97620        0.87978        1.00000     0       17.50737        0.55225       17.11017        0.55794        0.39721        0.07944
   55236.062651       0.000321       28.79288        0.92696        1.00000     0       18.12022        0.57187       17.87331        0.57541        0.24691        0.06375
   55236.063302       0.000330       28.20479        0.91076        1.00000     0       17.67852        0.55737       17.39002        0.56151        0.28850        0.06800
   55236.063973       0.000341       26.88474        0.87339        1.00000     0       17.01134        0.53741       16.68617        0.54207        0.32517        0.07096
   55236.064728       0.000414       28.23749        0.81743        0.99842     0       18.08654        0.50377       17.61303        0.50974        0.47350        0.07784