/*
**
**  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
   55606.182642       0.000683        2.10298        0.15069        0.94492     0        1.79671        0.12705        1.77583        0.12724        0.02089        0.00696
   55606.184036       0.000712        1.99528        0.14446        0.95935     0        1.69774        0.12005        1.66266        0.12037        0.03509        0.00877
   55606.185359       0.000611        2.34275        0.16835        0.94313     0        2.01340        0.14237        1.98480        0.14263        0.02861        0.00863
   55606.186539       0.000570        2.44364        0.17692        0.96954     0        2.09773        0.14833        2.05438        0.14873        0.04335        0.01084
   55606.187752       0.000642        2.18793        0.15819        0.96847     0        1.86357        0.13177        1.82746        0.13210        0.03611        0.00932
   55606.189164       0.000770        1.84856        0.13271        0.96617     0        1.56681        0.11051        1.54265        0.11073        0.02416        0.00698
   55606.191380       0.001447        1.93919        0.10005        0.94600     0        1.64756        0.08353        1.62240        0.08370        0.02516        0.00525