/*
**
**  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
   56751.248862       0.000304       20.91216        0.66868        1.00000     0
   56751.249470       0.000304       20.66976        0.66250        1.00000     0
   56751.250057       0.000284       21.97728        0.70449        1.00000     0
   56751.250636       0.000295       21.20254        0.67881        1.00000     0
   56751.251244       0.000312       20.00741        0.64189        1.00000     0
   56751.251840       0.000284       21.94356        0.70694        1.00000     0
   56751.252433       0.000310       20.03617        0.65195        1.00000     0
   56751.253040       0.000298       20.79469        0.67186        1.00000     0
   56751.253639       0.000301       20.73644        0.66596        1.00000     0
   56751.254247       0.000307       20.46800        0.65532        1.00000     0
   56751.254852       0.000298       21.11508        0.67686        0.99029     0
   56751.255454       0.000304       20.62093        0.66089        1.00000     0
   56751.256064       0.000307       20.22356        0.65753        1.00000     0
   56751.256669       0.000298       20.93636        0.67185        1.00000     0
   56751.257279       0.000312       20.13144        0.64439        1.00000     0
   56751.257899       0.000307       20.34988        0.65407        1.00000     0
   56751.258492       0.000286       21.63144        0.70368        1.00000     0
   56751.259062       0.000284       21.99708        0.70420        1.00000     0
   56751.259878       0.000532       21.02319        0.50380        1.00000     0