/*
**
**  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
   55687.941913       0.000205        6.49025        0.46494        1.00000     0
   55687.942378       0.000260        5.11996        0.37566        0.98889     0
   55687.942911       0.000272        4.90321        0.36413        0.97872     0
   55687.943446       0.000263        5.15751        0.38082        0.97802     0
   55687.943953       0.000243        5.69910        0.41948        0.96429     0
   55687.944456       0.000260        5.38797        0.40090        0.94444     0
   55687.944942       0.000226        6.01692        0.43476        0.98718     0
   55687.945434       0.000266        5.18533        0.38072        0.96739     0
   55687.945955       0.000255        5.42295        0.39592        0.96591     0
   55687.946450       0.000240        5.86571        0.41782        0.97590     0
   55687.946959       0.000269        5.00126        0.36687        0.97849     0
   55687.947497       0.000269        5.03729        0.36510        0.97849     0
   55687.948015       0.000249        5.37773        0.39463        1.00000     0
   55687.948492       0.000229        6.05908        0.43719        0.97468     0
   55687.948976       0.000255        5.37502        0.38960        0.96591     0
   55687.949473       0.000243        5.75472        0.41023        0.96429     0
   55687.949983       0.000266        5.25067        0.37425        0.97826     0
   55687.950506       0.000258        5.23465        0.37809        1.00000     0
   55687.951030       0.000266        5.03670        0.36389        0.98913     0
   55687.951542       0.000246        5.51980        0.39526        0.98824     0
   55687.952043       0.000255        5.37904        0.38592        0.98864     0
   55687.952535       0.000237        5.84162        0.41600        0.98780     0
   55687.953032       0.000260        5.50180        0.39212        0.96667     0
   55687.953539       0.000246        5.70459        0.40661        0.97647     0
   55687.954308       0.000524        5.04886        0.25750        0.99448     0