/*
**
**  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
   54968.948627       0.000339       18.56776        0.59406        1.00000     0       17.17389        0.54227       17.01236        0.54427        0.16153        0.04663
   54968.949319       0.000353       17.53553        0.56249        1.00000     0       16.42078        0.51927       16.25296        0.52135        0.16782        0.04655
   54968.950025       0.000353       17.72419        0.56833        0.99180     0       16.63927        0.52487       16.44403        0.52728        0.19524        0.05041
   54968.950722       0.000344       17.95721        0.57568        1.00000     0       16.81792        0.53210       16.65910        0.53407        0.15882        0.04585
   54968.951419       0.000353       17.61221        0.56576        1.00000     0       16.58499        0.52186       16.33971        0.52489        0.24528        0.05627
   54968.952261       0.000489       18.27914        0.58738        0.69232     0       17.17362        0.54226       16.95825        0.54493        0.21537        0.05384
   54968.953092       0.000341       18.01555        0.58271        1.00000     0       16.99439        0.53714       16.71411        0.54061        0.28029        0.06116
   54968.953775       0.000341       18.25681        0.58489        1.00000     0       17.16417        0.53982       16.93727        0.54262        0.22690        0.05503
   54968.954472       0.000356       17.33179        0.55747        1.00000     0       16.27099        0.51479       16.07892        0.51717        0.19207        0.04959
   54968.955178       0.000350       17.63206        0.56651        1.00000     0       16.53993        0.52330       16.35771        0.52556        0.18222        0.04870
   54968.955887       0.000359       17.26068        0.55214        1.00000     0       16.13977        0.51064       16.01276        0.51222        0.12701        0.04016
   54968.956619       0.000373       16.59571        0.53301        1.00000     0       15.59185        0.49207       15.39651        0.49449        0.19534        0.04884
   54968.957319       0.000327       18.86469        0.60678        1.00000     0       17.71090        0.56035       17.50184        0.56294        0.20906        0.05398
   54968.958315       0.000668       17.72542        0.41066        1.00000     0       16.60773        0.37951       16.44411        0.38098        0.16363        0.03340