/*
**
**  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
   56633.530161       0.000263       23.54698        0.76606        1.00000     0       22.21276        0.69929       21.71316        0.70639        0.49961        0.09992
   56633.530671       0.000246       25.45172        0.82644        1.00000     0       23.56861        0.74530       23.14071        0.75142        0.42790        0.09568
   56633.531183       0.000266       23.53135        0.76070        1.00000     0       21.90600        0.69066       21.53042        0.69601        0.37557        0.08616
   56633.531704       0.000255       24.86044        0.79713        1.00000     0       22.85619        0.72134       22.60821        0.72488        0.24799        0.07159
   56633.532216       0.000258       24.83042        0.80205        1.00000     0       22.62189        0.71359       22.25409        0.71883        0.36780        0.08669
   56633.532728       0.000255       24.91292        0.80325        1.00000     0       22.90172        0.72205       22.55041        0.72706        0.35132        0.08521
   56633.533246       0.000263       23.87122        0.77002        1.00000     0       22.01463        0.69616       21.71487        0.70045        0.29976        0.07740
   56633.533758       0.000249       25.25116        0.80836        1.00000     0       23.34114        0.73737       23.12968        0.74040        0.21146        0.06687
   56633.534259       0.000252       24.77038        0.80511        1.00000     0       23.16496        0.73035       22.68419        0.73720        0.48077        0.10025
   56633.534950       0.000440       24.16270        0.60175        0.99816     0       22.55257        0.54570       22.10907        0.55055        0.44349        0.07291