/*
**
**  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
   56669.166533       0.000532       12.03623        0.38665        0.99457     0       11.01287        0.34722       10.85073        0.34857        0.16214        0.03064
   56669.167600       0.000535       11.97613        0.38679        1.00000     0       10.83967        0.34261       10.65636        0.34414        0.18330        0.03240
   56669.168254       0.000119       10.88069        0.77702        1.00000     0        9.96781        0.69789        9.81273        0.70075        0.15508        0.06331
   56669.168902       0.000530       12.09873        0.38905        1.00000     0       10.99097        0.34687       10.82883        0.34822        0.16214        0.03064
   56669.169958       0.000527       12.17656        0.39273        1.00000     0       11.01834        0.34826       10.84366        0.34971        0.17468        0.03189
   56669.171046       0.000561       11.45714        0.36632        1.00000     0       10.33679        0.32671       10.24393        0.32749        0.09286        0.02252
   56669.172146       0.000538       12.02040        0.38449        1.00000     0       10.81370        0.34128       10.69975        0.34223        0.11395        0.02548
   56669.172803       0.000119       11.06295        0.79347        1.00000     0        9.82123        0.69274        9.69199        0.69514        0.12923        0.05780
   56669.173460       0.000538       11.95931        0.38535        0.99462     0       10.87215        0.34312       10.69458        0.34460        0.17757        0.03189
   56669.174484       0.000486       13.26373        0.42670        1.00000     0       11.94846        0.37747       11.77815        0.37889        0.17031        0.03278
   56669.175262       0.000292       11.09216        0.50346        1.00000     0        9.99684        0.44529        9.84995        0.44702        0.14689        0.03926
   56669.176298       0.000744       12.04389        0.32714        1.00000     0       10.96767        0.29239       10.80686        0.29353        0.16081        0.02575