/*
**
**  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
   54972.956060       0.000258       24.32530        0.77813        1.00000     0
   54972.956564       0.000246       25.62817        0.82307        1.00000     0
   54972.957070       0.000260       24.02586        0.77501        1.00000     0
   54972.957579       0.000249       25.43340        0.81844        1.00000     0
   54972.958074       0.000246       26.15713        0.84056        1.00000     0
   54972.958575       0.000255       25.60961        0.81165        1.00000     0
   54972.959087       0.000258       24.72037        0.79833        1.00000     0
   54972.959608       0.000263       23.88527        0.76831        1.00000     0
   54972.960117       0.000246       26.06829        0.82774        1.00000     0
   54972.960614       0.000252       25.54585        0.81491        1.00000     0
   54972.961130       0.000263       23.95104        0.77186        1.00000     0
   54972.961650       0.000258       24.58603        0.79305        1.00000     0
   54972.962171       0.000263       24.24165        0.77367        1.00000     0
   54972.962704       0.000269       23.86863        0.76378        1.00000     0
   54972.963233       0.000260       24.64043        0.79704        1.00000     0
   54972.963757       0.000263       23.96799        0.76988        1.00000     0
   54972.964298       0.000278       22.92439        0.73984        1.00000     0
   54972.964833       0.000258       24.71093        0.79384        1.00000     0
   54972.965363       0.000272       23.54214        0.76168        1.00000     0
   54972.965892       0.000258       24.98698        0.80363        1.00000     0
   54972.966410       0.000260       24.88036        0.79732        1.00000     0
   54972.967015       0.000344       24.18004        0.68406        1.00000     0