/*
**
**  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)
**
**
**  Upper limits have an error listed as -1.00000.
**
*/
      BinCenter          BinHW           Rate      RateError        FracExp  Mode
   55939.173269       0.000150        8.75339        0.62337        1.00000     0
   55939.173538       0.000119       11.35804        0.81109        1.00000     0
   55939.173781       0.000124       11.18408        0.78462        1.00000     0
   55939.174036       0.000130       10.26000        0.74776        1.00000     0
   55939.174310       0.000145        9.53429        0.68777        0.96000     0
   55939.174588       0.000133       10.02083        0.71364        1.00000     0
   55939.174852       0.000130       10.09683        0.73074        1.00000     0
   55939.175124       0.000142        9.40928        0.67269        1.00000     0
   55939.175390       0.000124       10.67181        0.77083        1.00000     0
   55939.175636       0.000122       10.89774        0.78363        1.00000     0
   55939.175899       0.000142        9.45582        0.67170        1.00000     0
   55939.176180       0.000139        9.79806        0.68817        1.00000     0
   55939.176455       0.000136       10.13412        0.71900        0.97872     0
   55939.176715       0.000124       10.72883        0.76893        1.00000     0
   55939.176981       0.000142        9.31584        0.67205        1.00000     0
   55939.177259       0.000136       10.02309        0.71934        0.97872     0
   55939.177534       0.000139        9.45337        0.68375        1.00000     0
   55939.177806       0.000133       10.18043        0.72231        1.00000     0
   55939.178066       0.000127       10.51390        0.74926        1.00000     0
   55939.178318       0.000124       10.88219        0.77210        1.00000     0
   55939.178575       0.000133        9.99796        0.71431        1.00000     0
   55939.178845       0.000136        9.83414        0.70082        1.00000     0
   55939.179119       0.000139        9.69372        0.69749        1.00000     0
   55939.179397       0.000139       11.45000        0.74665        1.00000     0
   55939.179678       0.000142        9.36721        0.66879        1.00000     0
   55939.179938       0.000119       11.23045        0.80548        1.00000     0
   55939.180184       0.000127       10.63559        0.75791        1.00000     0
   55939.180445       0.000133       10.00040        0.71628        1.00000     0
   55939.180725       0.000148        9.27352        0.65468        1.00000     0
   55939.180994       0.000122       10.87479        0.78147        1.00000     0
   55939.181240       0.000124       10.65190        0.76298        1.00000     0
   55939.181489       0.000124       10.64369        0.76536        1.00000     0
   55939.181758       0.000145        9.27672        0.66153        1.00000     0
   55939.182045       0.000142        9.29663        0.67284        1.00000     0
   55939.182305       0.000119       11.27747        0.80986        1.00000     0
   55939.182551       0.000127       10.53649        0.74557        1.00000     0
   55939.182800       0.000122       10.96516        0.78036        1.00000     0
   55939.183046       0.000124       10.59763        0.76700        1.00000     0
   55939.183292       0.000122       10.98290        0.78216        1.00000     0
   55939.183544       0.000130       10.17774        0.73186        1.00000     0
   55939.183819       0.000145        9.04383        0.66096        1.00000     0
   55939.184122       0.000159       11.42799        0.69824        1.00000     0
   55939.184403       0.000122       11.37650        0.81132        1.00000     0
   55939.184684       0.000159        8.50627        0.61630        1.00000     0
   55939.184976       0.000133       10.27482        0.73176        1.00000     0
   55939.185239       0.000130       10.49583        0.75571        1.00000     0
   55939.185500       0.000130       10.29069        0.74379        1.00000     0
   55939.185850       0.000220       10.45716        0.56872        1.00000     0