/*
**
**  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
   54509.368919       0.000113       70.77583        2.23159        1.00000     0
   54509.369157       0.000124       72.98643        2.33858        1.00000     0
   54509.369414       0.000133       69.02375        2.20078        1.00000     0
   54509.369672       0.000124       67.07234        2.16551        1.00000     0
   54509.369912       0.000116       68.39906        2.17169        1.00000     0
   54509.370143       0.000116       67.10439        2.16346        1.00000     0
   54509.370378       0.000119       64.89634        2.07003        1.00000     0
   54509.370615       0.000119       66.75774        2.13624        1.00000     0
   54509.370849       0.000116       66.43864        2.14308        1.00000     0
   54509.371087       0.000122       63.30493        2.03188        1.00000     0
   54509.371318       0.000110       70.89545        2.25761        1.00000     0
   54509.371547       0.000119       64.48287        2.08654        1.00000     0
   54509.371784       0.000119       65.29333        2.09201        1.00000     0
   54509.372013       0.000110       70.50868        2.25725        1.00000     0
   54509.372235       0.000113       67.95383        2.18074        1.00000     0
   54509.372467       0.000119       64.26006        2.06118        1.00000     0
   54509.372696       0.000110       70.41782        2.24145        1.00000     0
   54509.372918       0.000113       68.58529        2.19631        1.00000     0
   54509.373150       0.000119       66.37353        2.12990        1.00000     0
   54509.373378       0.000110       70.81796        2.25715        1.00000     0
   54509.373598       0.000110       70.14893        2.24170        1.00000     0
   54509.373821       0.000113       67.57317        2.19285        1.00000     0
   54509.374044       0.000110       70.02438        2.24542        1.00000     0
   54509.374267       0.000113       68.00592        2.17860        1.00000     0
   54509.374492       0.000113       68.45061        2.18386        1.00000     0
   54509.374718       0.000113       68.50039        2.19287        1.00000     0
   54509.374944       0.000113       70.29720        2.24507        1.00000     0
   54509.375167       0.000110       70.06657        2.24545        1.00000     0
   54509.375389       0.000113       67.86565        2.18134        1.00000     0
   54509.375615       0.000113       69.44585        2.21734        1.00000     0
   54509.375907       0.000179       64.38610        1.66673        0.99199     0