/*
**
**  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
   56420.011694       0.000460       13.55484        0.43815        1.00000     0       12.61219        0.39863       12.41800        0.40141        0.19419        0.04710
   56420.012603       0.000448       14.03229        0.44790        1.00000     0       12.98937        0.40974       12.88390        0.41124        0.10546        0.03515
   56420.013511       0.000460       13.55223        0.43761        1.00000     0       12.63739        0.39903       12.44320        0.40180        0.19419        0.04710
   56420.014452       0.000480       12.95490        0.41843        1.00000     0       12.06828        0.38163       11.89322        0.38413        0.17506        0.04377
   56420.015378       0.000446       13.94134        0.45257        1.00000     0       13.04770        0.41199       12.80002        0.41552        0.24767        0.05405
   56420.016278       0.000454       13.64723        0.44349        1.00000     0       12.77286        0.40371       12.52991        0.40718        0.24294        0.05301
   56420.017175       0.000443       14.15215        0.45856        0.99346     0       13.23256        0.41762       12.99357        0.42102        0.23898        0.05344
   56420.018054       0.000437       14.32295        0.46006        1.00000     0       13.30692        0.42017       13.15055        0.42240        0.15637        0.04337
   56420.018969       0.000477       13.06262        0.42381        0.99394     0       12.20324        0.38609       11.99282        0.38910        0.21042        0.04827
   56420.020138       0.000692       13.51578        0.35897        1.00000     0       12.69897        0.32626       12.41018        0.32960        0.28878        0.04685