/*
**
**  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
   55572.209572       0.000532       11.85355        0.38113        1.00000     0       10.94213        0.34516       10.79105        0.34699        0.15107        0.03561
   55572.210634       0.000530       11.61905        0.37762        1.00000     0       10.93624        0.34601       10.72526        0.34857        0.21097        0.04219
   55572.211684       0.000521       12.08903        0.38520        0.99444     0       11.23658        0.35462       11.15893        0.35557        0.07765        0.02588
   55572.212746       0.000541       11.50542        0.37017        1.00000     0       10.77730        0.33979       10.62039        0.34169        0.15691        0.03600
   55572.213794       0.000506       12.27069        0.39412        1.00000     0       11.45907        0.36219       11.32670        0.36380        0.13237        0.03418
   55572.214800       0.000501       12.40928        0.39834        1.00000     0       11.57997        0.36619       11.45500        0.36771        0.12497        0.03340
   55572.215805       0.000503       12.31229        0.39673        1.00000     0       11.52493        0.36427       11.36517        0.36621        0.15976        0.03765
   55572.216803       0.000495       12.55375        0.40409        1.00000     0       11.75055        0.37103       11.58799        0.37300        0.16256        0.03832
   55572.217827       0.000530       11.70382        0.37691        1.00000     0       10.94718        0.34618       10.80372        0.34792        0.14346        0.03479
   55572.218898       0.000541       11.91239        0.37887        1.00000     0       11.17368        0.34598       10.95896        0.34854        0.21472        0.04211