/*
**
**  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
   57555.008971       0.000179       35.07201        1.11468        1.00000     0
   57555.009341       0.000191       32.87939        1.04183        1.00000     0
   57555.009718       0.000185       33.62028        1.07658        1.00000     0
   57555.010097       0.000194       32.02695        1.02559        1.00000     0
   57555.010473       0.000182       34.31352        1.09054        1.00000     0
   57555.010840       0.000185       33.37517        1.07258        1.00000     0
   57555.011202       0.000177       35.27991        1.12522        1.00000     0
   57555.011572       0.000194       32.23457        1.02755        1.00000     0
   57555.011960       0.000194       32.19154        1.02363        1.00000     0
   57555.012351       0.000197       31.40672        1.01134        1.00000     0
   57555.012733       0.000185       33.65605        1.07770        1.00000     0
   57555.013106       0.000188       32.89693        1.05667        1.00000     0
   57555.013479       0.000185       33.50303        1.07394        1.00000     0
   57555.013847       0.000182       34.72488        1.09699        1.00000     0
   57555.014217       0.000188       32.98823        1.05956        1.00000     0
   57555.014599       0.000194       32.30091        1.02862        1.00000     0
   57555.014975       0.000182       34.01567        1.08875        1.00000     0
   57555.015340       0.000182       34.19639        1.09283        1.00000     0
   57555.015704       0.000182       33.91607        1.09051        1.00000     0
   57555.016060       0.000174       36.04846        1.15551        1.00000     0
   57555.016433       0.000200       31.64563        1.00831        1.00000     0
   57555.016827       0.000194       32.26723        1.02808        1.00000     0
   57555.017209       0.000188       33.35032        1.05780        1.00000     0
   57555.017591       0.000194       32.05873        1.02609        1.00000     0
   57555.017973       0.000188       33.51065        1.06233        1.00000     0
   57555.018349       0.000188       32.87195        1.05693        1.00000     0
   57555.018722       0.000185       33.66882        1.07114        1.00000     0
   57555.019168       0.000260       33.74965        0.90522        1.00000     0