/*
**
**  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
   56677.168641       0.000498       12.42541        0.40321        1.00000     0       11.65895        0.36850       11.44857        0.37149        0.21038        0.04704
   56677.169634       0.000495       12.57237        0.40787        1.00000     0       11.70370        0.37029       11.50267        0.37315        0.20103        0.04612
   56677.170647       0.000518       11.94598        0.38447        1.00000     0       11.18063        0.35374       11.04923        0.35561        0.13140        0.03644
   56677.171674       0.000509       12.19922        0.39421        1.00000     0       11.37121        0.35977       11.20673        0.36211        0.16448        0.04112
   56677.172704       0.000521       11.95502        0.38449        1.00000     0       11.21868        0.35336       11.05786        0.35564        0.16082        0.04021
   56677.173708       0.000483       12.96144        0.41141        1.00000     0       12.03201        0.37992       11.98867        0.38053        0.04334        0.02167
   56677.174686       0.000495       12.48418        0.40350        1.00000     0       11.72713        0.37066       11.54726        0.37322        0.17987        0.04362
   56677.175690       0.000509       12.15194        0.39173        1.00000     0       11.39397        0.36013       11.23977        0.36232        0.15420        0.03981
   56677.176694       0.000495       12.54231        0.40517        1.00000     0       11.73884        0.37084       11.55898        0.37340        0.17987        0.04362
   56677.177672       0.000483       12.80449        0.41210        1.00000     0       11.98402        0.37916       11.84318        0.38116        0.14084        0.03906
   56677.178615       0.000460       12.26919        0.41154        1.00000     0       11.42783        0.37945       11.34818        0.38065        0.07965        0.03011