/*
**
**  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
   56737.180127       0.000295       21.54686        0.68839        1.00000     0       19.71910        0.62233       19.54206        0.62426        0.17704        0.04910
   56737.180711       0.000289       21.81021        0.69838        1.00000     0       20.09345        0.63446       19.88509        0.63674        0.20836        0.05380
   56737.181301       0.000301       20.94538        0.67040        1.00000     0       19.30136        0.60975       19.11437        0.61180        0.18699        0.04998
   56737.181883       0.000281       22.67723        0.72278        1.00000     0       20.71490        0.65408       20.57170        0.65565        0.14320        0.04528
   56737.182459       0.000295       21.71247        0.69331        1.00000     0       19.91551        0.62542       19.67038        0.62808        0.24513        0.05778
   56737.183037       0.000284       22.45740        0.71859        1.00000     0       20.42175        0.64612       20.25166        0.64798        0.17009        0.04910
   56737.183622       0.000301       20.94628        0.67726        1.00000     0       19.24358        0.60884       18.93638        0.61220        0.30720        0.06406
   56737.184218       0.000295       21.60436        0.69169        1.00000     0       19.77802        0.62326       19.54651        0.62578        0.23151        0.05615
   56737.184785       0.000272       23.21885        0.74679        1.00000     0       21.31208        0.67395       21.04608        0.67686        0.26599        0.06270
   56737.185344       0.000286       22.31171        0.71000        1.00000     0       20.39759        0.64246       20.24325        0.64415        0.15434        0.04654
   56737.185931       0.000301       20.95116        0.67446        1.00000     0       19.43620        0.61188       19.11565        0.61537        0.32056        0.06543
   56737.186527       0.000295       21.67335        0.69267        1.00000     0       19.73874        0.62264       19.54809        0.62472        0.19066        0.05096
   56737.187123       0.000301       21.02320        0.67488        1.00000     0       19.26284        0.60914       19.04914        0.61148        0.21370        0.05343
   56737.187699       0.000275       23.61387        0.75294        1.00000     0       21.17209        0.66819       21.01125        0.66994        0.16084        0.04850
   56737.188275       0.000301       21.24548        0.68207        1.00000     0       19.26284        0.60914       19.04914        0.61148        0.21370        0.05343
   56737.188865       0.000289       21.75886        0.69840        1.00000     0       20.07342        0.63414       19.83728        0.63672        0.23614        0.05727
   56737.189695       0.000541       21.44179        0.51008        1.00000     0       19.56198        0.45779       19.32428        0.45971        0.23770        0.04202