/*
**
**  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
   55252.253086       0.000116       54.88021        1.74812        1.00000     0
   55252.253312       0.000110       57.38996        1.82398        1.00000     0
   55252.253529       0.000107       60.81566        1.91674        1.00000     0
   55252.253749       0.000113       57.51085        1.81739        1.00000     0
   55252.253977       0.000116       54.58776        1.72722        1.00000     0
   55252.254194       0.000101       61.60839        1.96699        1.00000     0
   55252.254402       0.000107       59.29622        1.88298        1.00000     0
   55252.254614       0.000104       59.88936        1.91832        1.00000     0
   55252.254825       0.000107       58.63469        1.87238        1.00000     0
   55252.255042       0.000110       56.55354        1.82255        1.00000     0
   55252.255256       0.000104       59.77172        1.91341        1.00000     0
   55252.255464       0.000104       60.43093        1.92061        1.00000     0
   55252.255678       0.000110       57.02830        1.81908        1.00000     0
   55252.255904       0.000116       54.77555        1.74307        1.00000     0
   55252.256127       0.000107       58.71897        1.86563        1.00000     0
   55252.256344       0.000110       58.02961        1.82846        1.00000     0
   55252.256558       0.000104       60.50681        1.93286        1.00000     0
   55252.256775       0.000113       55.29809        1.77269        1.00000     0
   55252.256992       0.000104       60.89761        1.93942        1.00000     0
   55252.257203       0.000107       58.84241        1.86767        1.00000     0
   55252.257420       0.000110       57.54007        1.82706        1.00000     0
   55252.257649       0.000119       52.80553        1.68660        1.00000     0
   55252.257880       0.000113       54.72757        1.77443        1.00000     0
   55252.258100       0.000107       58.45844        1.86811        1.00000     0
   55252.258312       0.000104       59.83059        1.91587        1.00000     0
   55252.258531       0.000116       54.93166        1.74401        1.00000     0
   55252.258757       0.000110       56.94108        1.82695        1.00000     0
   55252.258977       0.000110       57.19076        1.82148        1.00000     0
   55252.259200       0.000113       56.52486        1.78905        1.00000     0
   55252.259423       0.000110       58.06625        1.83692        1.00000     0
   55252.259648       0.000116       54.85447        1.73411        1.00000     0
   55252.259877       0.000113       55.35779        1.77655        1.00000     0
   55252.260097       0.000107       59.06850        1.88553        1.00000     0
   55252.260317       0.000113       55.61054        1.76865        1.00000     0
   55252.260540       0.000110       56.22277        1.82195        1.00000     0
   55252.260757       0.000107       58.44625        1.86470        1.00000     0
   55252.260977       0.000113       55.73354        1.77221        1.00000     0
   55252.261199       0.000110       57.38820        1.82939        1.00000     0
   55252.261416       0.000107       59.35287        1.88383        1.00000     0
   55252.261630       0.000107       58.93357        1.87414        1.00000     0
   55252.261847       0.000110       56.53466        1.81754        1.00000     0
   55252.262070       0.000113       55.83288        1.77214        1.00000     0
   55252.262290       0.000107       58.32743        1.85977        1.00000     0
   55252.262507       0.000110       57.01019        1.81556        1.00000     0
   55252.262727       0.000110       57.75916        1.83033        1.00000     0
   55252.263019       0.000182       55.00410        1.39118        1.00000     0