/*
**
**  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
   55967.446996       0.000156       13.84145        0.99964        1.00000     0
   55967.447370       0.000217       15.10911        1.10483        0.98667     0
   55967.447812       0.000226       16.33523        1.19235        0.96154     0
   55967.448319       0.000281       13.77313        0.99029        0.96907     0
   55967.448842       0.000243       15.15458        1.11232        0.98810     0
   55967.449340       0.000255       14.62812        1.06757        0.98864     0
   55967.449843       0.000249       14.93683        1.09339        0.98837     0
   55967.450370       0.000278       13.53115        0.97325        0.98958     0
   55967.450908       0.000260       14.55302        1.06051        0.97778     0
   55967.451403       0.000234       16.05050        1.16094        0.98765     0
   55967.451895       0.000258       14.68257        1.07000        0.97753     0
   55967.452381       0.000229       16.72144        1.22193        0.96203     0
   55967.452827       0.000217       17.09510        1.23783        0.98667     0
   55967.453293       0.000249       15.39430        1.11806        0.96512     0
   55967.453758       0.000217       17.22577        1.24739        0.98667     0
   55967.454210       0.000234       16.47055        1.18733        0.96296     0
   55967.454687       0.000243       15.42537        1.11982        0.98810     0
   55967.455173       0.000243       15.37501        1.10546        1.00000     0
   55967.455662       0.000246       15.28620        1.10902        0.98824     0
   55967.456131       0.000223       17.11719        1.23529        0.98701     0
   55967.456629       0.000275       13.84045        1.01220        0.97895     0
   55967.457129       0.000226       16.66030        1.20810        0.98718     0
   55967.457578       0.000223       17.18907        1.25313        0.97403     0
   55967.458026       0.000226       16.78620        1.22833        0.97436     0
   55967.458518       0.000266       15.09488        1.06966        0.96739     0