/*
**
**  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
   55174.687667       0.000220       28.56853        0.91771        1.00000     0
   55174.688101       0.000214       29.85174        0.96071        1.00000     0
   55174.688526       0.000211       29.82835        0.95688        1.00000     0
   55174.688951       0.000214       29.36366        0.94571        1.00000     0
   55174.689385       0.000220       28.40393        0.91405        1.00000     0
   55174.689831       0.000226       27.79850        0.89272        1.00000     0
   55174.690265       0.000208       30.26181        0.96756        1.00000     0
   55174.690693       0.000220       28.71309        0.92633        1.00000     0
   55174.691133       0.000220       28.96868        0.91912        1.00000     0
   55174.691564       0.000211       29.84485        0.95522        1.00000     0
   55174.691992       0.000217       28.97695        0.92473        1.00000     0
   55174.692418       0.000208       30.13244        0.96641        1.00000     0
   55174.692849       0.000223       28.18498        0.91062        1.00000     0
   55174.693292       0.000220       28.59046        0.91239        1.00000     0
   55174.693726       0.000214       29.41313        0.94263        1.00000     0
   55174.694162       0.000223       28.34059        0.91069        1.00000     0
   55174.694605       0.000220       28.65875        0.91582        1.00000     0
   55174.695039       0.000214       29.20306        0.94002        1.00000     0
   55174.695476       0.000223       28.21281        0.90580        1.00000     0
   55174.695936       0.000237       26.62649        0.85334        1.00000     0
   55174.696393       0.000220       28.84230        0.92103        1.00000     0
   55174.696827       0.000214       29.38951        0.93816        1.00000     0
   55174.697261       0.000220       28.83835        0.92090        1.00000     0
   55174.697704       0.000223       28.04853        0.90475        1.00000     0
   55174.698150       0.000223       28.10115        0.90408        1.00000     0
   55174.698595       0.000223       28.10468        0.90491        1.00000     0
   55174.699058       0.000240       27.57436        0.86337        1.00000     0