/*
**
**  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
   56276.160687       0.000124       11.88798        0.86123        1.00000     0        9.41102        0.66216        9.24032        0.66763        0.17070        0.08535
   56276.161297       0.000486       13.80543        0.45096        1.00000     0       11.94847        0.37747       11.67540        0.38140        0.27307        0.05461
   56276.162287       0.000503       13.75541        0.45140        1.00000     0       11.52494        0.36427       11.22965        0.36852        0.29529        0.05580
   56276.163285       0.000495       14.04109        0.45873        1.00000     0       11.73884        0.37084       11.47057        0.37471        0.26828        0.05366
   56276.164295       0.000515       13.65703        0.44262        1.00000     0       11.27720        0.35626       11.08133        0.35908        0.19587        0.04494
   56276.165313       0.000503       13.83603        0.44664        1.00000     0       11.50191        0.36390       11.34372        0.36619        0.15819        0.04084
   56276.166338       0.000521       13.41033        0.43561        1.00000     0       11.12964        0.35195       10.92575        0.35489        0.20389        0.04559
   56276.167374       0.000515       13.42301        0.43801        1.00000     0       11.24344        0.35573       11.00633        0.35915        0.23711        0.04944
   56276.168421       0.000532       13.21040        0.42397        1.00000     0       10.94213        0.34516       10.81248        0.34703        0.12965        0.03596
   56276.169428       0.000475       14.69928        0.47920        1.00000     0       12.22768        0.38648       11.97033        0.39019        0.25735        0.05366
   56276.170415       0.000512       13.52251        0.44209        1.00000     0       11.35224        0.35845       11.08269        0.36233        0.26955        0.05286
   56276.171558       0.000631       13.92655        0.40032        1.00000     0       11.53296        0.32555       11.38987        0.32740        0.14310        0.03471