/*
**
**  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
   54512.108946       0.000237       60.23042        1.95431        1.00000     0
   54512.109430       0.000246       61.95950        2.02130        1.00000     0
   54512.109924       0.000249       60.89743        2.00156        1.00000     0
   54512.110422       0.000249       60.23522        1.96214        1.00000     0
   54512.110917       0.000246       59.81992        1.98617        1.00000     0
   54512.111403       0.000240       62.27800        2.04509        1.00000     0
   54512.111892       0.000249       60.28703        1.96003        1.00000     0
   54512.112375       0.000234       64.69363        2.12338        1.00000     0
   54512.112873       0.000263       58.16058        1.89783        1.00000     0
   54512.113379       0.000243       62.71705        2.04809        1.00000     0
   54512.114114       0.000492       60.26171        1.41569        0.99446     0
   54512.175651       0.000275       58.20864        1.88792        0.99978     0
   54512.176203       0.000278       55.32709        1.79591        1.00000     0
   54512.176742       0.000260       59.08809        1.94327        1.00000     0
   54512.177268       0.000266       57.93733        1.89835        1.00000     0
   54512.177789       0.000255       60.41264        1.98635        1.00000     0
   54512.178304       0.000260       58.80029        1.94985        1.00000     0
   54512.178819       0.000255       60.71438        1.98141        1.00000     0
   54512.179337       0.000263       59.03152        1.93055        1.00000     0
   54512.179875       0.000275       56.24632        1.84985        1.00000     0
   54512.180425       0.000275       56.49477        1.84415        1.00000     0
   54512.180960       0.000260       59.41123        1.94809        1.00000     0
   54512.181493       0.000272       56.84858        1.84688        1.00000     0
   54512.182037       0.000272       55.91520        1.86140        1.00000     0
   54512.182578       0.000269       57.74953        1.87961        1.00000     0
   54512.183113       0.000266       57.86401        1.90503        1.00000     0
   54512.183680       0.000301       56.92207        1.76787        1.00000     0