/*
**
**  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
   57181.832686       0.000385       16.21078        0.53362        1.00000     0       15.09276        0.47680       14.66933        0.48283        0.42343        0.07605
   57181.833458       0.000388       16.36555        0.53017        1.00000     0       15.05488        0.47442       14.77018        0.47847        0.28470        0.06213
   57181.834239       0.000394       15.85121        0.51489        1.00000     0       14.75983        0.46628       14.47932        0.47028        0.28051        0.06121
   57181.835006       0.000373       16.98770        0.54381        1.00000     0       15.56075        0.49158       15.41993        0.49360        0.14083        0.04453
   57181.836103       0.000723       15.91188        0.37853        0.99756     0       14.75641        0.34429       14.55973        0.34637        0.19668        0.03785