/*
**
**  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
   55685.946850       0.000315        4.27164        0.30847        1.00000     0        3.67585        0.25992        3.60900        0.26058        0.06684        0.01854
   55685.947481       0.000315        4.33481        0.31147        0.98165     0        3.74455        0.26478        3.69217        0.26530        0.05238        0.01656
   55685.948112       0.000315        4.27749        0.30587        0.99083     0        3.70988        0.26233        3.67356        0.26269        0.03633        0.01373
   55685.948743       0.000315        4.30796        0.30974        0.98165     0        3.76328        0.26544        3.70042        0.26606        0.06285        0.01814
   55685.949382       0.000324        4.18743        0.29819        0.99107     0        3.62766        0.25588        3.59737        0.25617        0.03029        0.01237
   55685.950036       0.000330        4.10675        0.29461        0.98246     0        3.57739        0.25296        3.53235        0.25340        0.04504        0.01501
   55685.950670       0.000304        4.48239        0.32177        0.98095     0        3.90942        0.27575        3.84957        0.27634        0.05985        0.01805
   55685.951324       0.000350        3.79390        0.27305        1.00000     0        3.31130        0.23414        3.26035        0.23465        0.05095        0.01536
   55685.952030       0.000356        3.76382        0.27309        0.98374     0        3.31130        0.23414        3.23719        0.23488        0.07411        0.01853
   55685.952684       0.000298        4.58981        0.32663        0.98058     0        3.96700        0.28051        3.94481        0.28073        0.02220        0.01110
   55685.953335       0.000353        3.87670        0.27766        0.97541     0        3.36695        0.23808        3.32927        0.23845        0.03768        0.01332
   55685.954032       0.000344        3.87637        0.27989        0.99160     0        3.39548        0.24010        3.33374        0.24071        0.06174        0.01712
   55685.954643       0.000266        5.14978        0.36730        0.97826     0        4.47412        0.31558        4.43053        0.31601        0.04359        0.01648
   55685.955239       0.000330        4.03114        0.29361        0.99123     0        3.56346        0.25135        3.46426        0.25232        0.09919        0.02218
   55685.955843       0.000275        4.97630        0.35470        0.97895     0        4.30825        0.30464        4.27812        0.30494        0.03013        0.01348
   55685.956486       0.000367        3.68034        0.26445        0.98425     0        3.20534        0.22665        3.16050        0.22709        0.04484        0.01418
   55685.957174       0.000321        4.22403        0.29862        1.00000     0        3.64571        0.25651        3.63056        0.25666        0.01515        0.00875
   55685.957912       0.000417        4.32842        0.26848        0.99306     0        3.78252        0.23020        3.71981        0.23073        0.06271        0.01568