/*
**
**  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
   54974.857071       0.000333       24.30489        0.78707        1.00000     0       17.47254        0.55170       17.25267        0.55482        0.21986        0.05876
   54974.857817       0.000414       19.79988        0.65129        1.00000     0       14.00931        0.44301       13.66832        0.44785        0.34099        0.06562
   54974.858752       0.000521       23.45196        0.66111        0.99638     0       14.66626        0.40475       14.45480        0.40737        0.21147        0.04615
   54974.895743       0.000237       26.10352        0.84650        0.99280     0       24.63264        0.77856       24.20154        0.78482        0.43110        0.09890
   54974.896212       0.000231       26.88706        0.86174        1.00000     0       25.24198        0.79505       24.94182        0.79939        0.30016        0.08325
   54974.896695       0.000252       24.70547        0.79642        1.00000     0       23.07285        0.72890       22.75438        0.73352        0.31847        0.08223
   54974.897178       0.000231       26.80098        0.86504        1.00000     0       25.29206        0.79584       24.85337        0.80217        0.43869        0.10064
   54974.897661       0.000252       24.85644        0.79640        1.00000     0       23.16496        0.73035       22.91018        0.73405        0.25478        0.07355
   54974.898162       0.000249       25.19187        0.80160        1.00000     0       23.50420        0.73995       23.33238        0.74244        0.17183        0.06075
   54974.898645       0.000234       26.64010        0.84898        1.00000     0       24.88088        0.78445       24.69845        0.78710        0.18243        0.06450
   54974.899128       0.000249       25.16030        0.80989        1.00000     0       23.52750        0.74031       23.16237        0.74559        0.36513        0.08856
   54974.899614       0.000237       26.19711        0.84397        1.00000     0       24.69961        0.77681       24.29415        0.78267        0.40547        0.09557
   54974.900098       0.000246       25.50872        0.81891        1.00000     0       23.80429        0.74902       23.47833        0.75374        0.32596        0.08416
   54974.900598       0.000255       24.21852        0.78414        1.00000     0       22.85619        0.72134       22.45738        0.72711        0.39881        0.09149
   54974.901090       0.000237       26.41229        0.84414        1.00000     0       24.50417        0.77373       24.30143        0.77668        0.20273        0.06758
   54974.901588       0.000260       24.00289        0.76709        1.00000     0       22.50409        0.70776       22.25781        0.71132        0.24628        0.07110
   54974.902083       0.000234       26.48950        0.85172        1.00000     0       24.90562        0.78484       24.56355        0.78980        0.34206        0.08832
   54974.902560       0.000243       25.31824        0.81992        1.00000     0       23.87304        0.75455       23.47722        0.76030        0.39581        0.09329
   54974.903049       0.000246       25.40081        0.81519        1.00000     0       23.63931        0.74642       23.37854        0.75021        0.26077        0.07528
   54974.903541       0.000246       25.36363        0.81141        1.00000     0       23.78073        0.74865       23.51995        0.75243        0.26077        0.07528
   54974.904154       0.000367       25.76616        0.67014        1.00000     0       24.19772        0.61782       23.89229        0.62140        0.30543        0.06665