/*
**
**  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
   55220.277582       0.000362       39.98559        1.33570        1.00000     0       16.02669        0.50681       15.45565        0.51499        0.57104        0.09144
   55220.278299       0.000356       42.86172        1.41492        1.00000     0       16.30357        0.51531       15.82740        0.52214        0.47616        0.08417
   55220.279037       0.000382       41.27392        1.36170        1.00000     0       15.26785        0.48137       14.79642        0.48811        0.47143        0.08085
   55220.279801       0.000382       40.57734        1.35056        1.00000     0       15.20714        0.48041       14.66638        0.48815        0.54076        0.08659
   55220.280551       0.000367       42.83353        1.39567        1.00000     0       15.75852        0.49858       15.44147        0.50314        0.31705        0.06760
   55220.281286       0.000367       42.46876        1.39425        1.00000     0       15.77430        0.49883       15.37078        0.50462        0.40352        0.07626
   55220.282009       0.000356       43.78646        1.44094        1.00000     0       16.33615        0.51582       15.87486        0.52243        0.46128        0.08285
   55220.282744       0.000379       41.03162        1.35373        1.00000     0       15.30793        0.48384       14.86085        0.49025        0.44709        0.07903
   55220.283499       0.000376       41.59786        1.36935        1.00000     0       15.48733        0.48853       15.03680        0.49498        0.45052        0.07964
   55220.284234       0.000359       43.33243        1.43535        1.00000     0       16.17209        0.51115       15.65548        0.51856        0.51660        0.08732
   55220.284946       0.000353       44.07761        1.45529        1.00000     0       16.45363        0.51979       15.95856        0.52689        0.49507        0.08618
   55220.285663       0.000365       42.88748        1.40872        1.00000     0       15.96309        0.50379       15.52731        0.51003        0.43578        0.07956
   55220.286398       0.000370       42.13018        1.37970        1.00000     0       15.68236        0.49542       15.29629        0.50097        0.38607        0.07430
   55220.287107       0.000339       45.59825        1.51973        1.00000     0       17.15677        0.54200       16.53104        0.55096        0.62573        0.09894
   55220.287805       0.000359       43.19391        1.43041        1.00000     0       16.13978        0.51064       15.63793        0.51784        0.50184        0.08607
   55220.288511       0.000347       44.73846        1.46771        1.00000     0       16.67777        0.52766       16.26596        0.53358        0.41181        0.07925
   55220.289546       0.000689       44.13892        1.04074        1.00000     0       16.52331        0.37294       16.03114        0.37798        0.49217        0.06152