/*
**
**  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
   54954.957146       0.000324       20.33168        0.65881        1.00000     0
   54954.957803       0.000333       19.73719        0.63846        1.00000     0
   54954.958439       0.000304       22.10162        0.71107        1.00000     0
   54954.959070       0.000327       20.42682        0.66398        1.00000     0
   54954.959721       0.000324       20.73885        0.67561        0.99107     0
   54954.960366       0.000321       20.92227        0.67467        1.00000     0
   54954.961014       0.000327       20.48602        0.66537        1.00000     0
   54954.961660       0.000318       21.14852        0.68044        1.00000     0
   54954.962290       0.000312       21.70750        0.69222        1.00000     0
   54954.962936       0.000333       20.35153        0.65294        1.00000     0
   54954.963581       0.000312       21.74401        0.69356        1.00000     0
   54954.964218       0.000324       20.73116        0.66549        1.00000     0
   54954.964851       0.000310       21.86973        0.70076        1.00000     0
   54954.965496       0.000336       20.00282        0.63821        1.00000     0
   54954.966148       0.000315       21.46671        0.68544        1.00000     0
   54954.966799       0.000336       19.88150        0.63743        1.00000     0
   54954.967586       0.000451       20.70810        0.56548        1.00000     0