/*
**
**  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
   54479.261238       0.000168       37.29743        1.19341        1.00000     0
   54479.261559       0.000153       41.25247        1.31228        1.00000     0
   54479.261878       0.000165       37.80664        1.21788        1.00000     0
   54479.262196       0.000153       41.41985        1.31421        1.00000     0
   54479.262500       0.000150       41.45561        1.31767        1.00000     0
   54479.262801       0.000150       41.55405        1.32389        1.00000     0
   54479.263113       0.000162       38.46320        1.22729        1.00000     0
   54479.263431       0.000156       40.35120        1.27478        1.00000     0
   54479.263750       0.000162       38.82338        1.22704        1.00000     0
   54479.264068       0.000156       39.81335        1.27239        1.00000     0
   54479.264378       0.000153       40.44926        1.29108        1.00000     0
   54479.264684       0.000153       40.36649        1.28975        1.00000     0
   54479.264991       0.000153       40.82283        1.29781        1.00000     0
   54479.265304       0.000159       38.96796        1.24309        1.00000     0
   54479.265619       0.000156       39.61113        1.26489        1.00000     0
   54479.265934       0.000159       39.46753        1.25283        1.00000     0
   54479.266250       0.000156       39.72481        1.27013        1.00000     0
   54479.266559       0.000153       40.47434        1.29410        1.00000     0
   54479.266872       0.000159       38.84906        1.24119        1.00000     0
   54479.267190       0.000159       39.26347        1.24602        1.00000     0
   54479.267503       0.000153       40.56876        1.29292        1.00000     0
   54479.267809       0.000153       40.67066        1.29272        1.00000     0
   54479.268128       0.000165       38.58702        1.22239        1.00000     0
   54479.268443       0.000150       41.92548        1.34015        1.00000     0
   54479.268753       0.000159       39.15010        1.24850        1.00000     0
   54479.269068       0.000156       39.88732        1.26919        1.00000     0
   54479.269386       0.000162       38.47115        1.22483        1.00000     0
   54479.269722       0.000174       35.85812        1.15175        1.00000     0
   54479.270049       0.000153       40.30286        1.29487        1.00000     0
   54479.270364       0.000162       38.90967        1.25153        1.00000     0
   54479.270680       0.000153       41.81475        1.31487        1.00000     0