/*
**
**  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)
**   RawRate                  - Raw source count rate (cts/s)
**   RawError                 - 1 sigma error in the raw count rate (cts/s)
**   NetRate                  - Background subtracted count rate (cts/s)
**   NetError                 - 1 sigma error in the background subtracted count rate (cts/s)
**   BackRate                 - Background count rate (cts/s)
**   BackError                - 1 sigma error in the background count rate (cts/s)
**
**
**  Upper limits have an error listed as -1.00000.
**
*/
      BinCenter          BinHW           Rate      RateError        FracExp  Mode        RawRate       RawError        NetRate       NetError       BackRate      BackError
   55960.817650       0.000229       19.94259        1.08622        1.00000     0        9.99127        0.50335        9.68676        0.50734        0.30451        0.06350
   55960.818038       0.000159       20.32241        1.47071        1.00000     0        7.28482        0.51511        7.15170        0.51757        0.13312        0.05031
   55960.818365       0.000168       17.79265        1.28973        0.98276     0        7.09950        0.49952        6.93436        0.50254        0.16515        0.05505
   55960.818683       0.000150       16.53209        1.20754        1.00000     0        7.74362        0.54619        7.54248        0.54988        0.20114        0.06361
   55960.818984       0.000150       15.49018        1.13690        1.00000     0        7.74362        0.54619        7.50225        0.55062        0.24137        0.06968
   55960.819288       0.000153       16.08914        1.17712        0.98113     0        7.74362        0.54619        7.52237        0.55025        0.22125        0.06671
   55960.819597       0.000156       15.53271        1.12857        1.00000     0        7.45682        0.52596        7.28250        0.52916        0.17432        0.05811
   55960.819904       0.000150       16.81514        1.20171        1.00000     0        7.74362        0.54619        7.66317        0.54767        0.08046        0.04023
   55960.820271       0.000217       16.15249        0.99832        0.97991     0        7.76871        0.46018        7.51254        0.46412        0.25617        0.06038