/*
**
**  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
   54973.158995       0.000298       21.02801        0.67536        1.00000     0
   54973.159565       0.000272       23.14133        0.74318        1.00000     0
   54973.160109       0.000272       23.10527        0.74614        1.00000     0
   54973.160670       0.000289       22.06295        0.71212        1.00000     0
   54973.161254       0.000295       21.79720        0.69504        1.00000     0
   54973.161830       0.000281       22.92982        0.73204        1.00000     0
   54973.162400       0.000289       22.37151        0.71371        1.00000     0
   54973.162979       0.000289       21.71921        0.70528        1.00000     0
   54973.163555       0.000286       22.51297        0.72003        1.00000     0
   54973.164223       0.000382       21.72686        0.62107        0.99392     0
   54973.225485       0.000289       22.75348        0.72808        0.99800     0
   54973.226069       0.000295       22.31123        0.71329        1.00000     0
   54973.226657       0.000292       21.98389        0.71250        1.00000     0
   54973.227261       0.000312       20.78899        0.66577        1.00000     0
   54973.227889       0.000315       20.52248        0.66654        1.00000     0
   54973.228497       0.000292       22.27721        0.71817        1.00000     0
   54973.229102       0.000312       21.13526        0.68672        1.00000     0
   54973.229715       0.000301       21.88507        0.69850        1.00000     0
   54973.230606       0.000590       21.83360        0.50109        1.00000     0