/*
**
**  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
   55391.058078       0.000159        8.03689        0.57921        1.00000     0        7.43049        0.52024        7.26106        0.52329        0.16943        0.05648
   55391.058382       0.000145        9.16318        0.64136        1.00000     0        8.33380        0.57785        8.27168        0.57896        0.06212        0.03587
   55391.058692       0.000165        7.74280        0.55546        1.00000     0        7.09948        0.49952        6.99049        0.50150        0.10899        0.04450
   55391.059019       0.000162        8.07533        0.56760        1.00000     0        7.33358        0.51220        7.29660        0.51287        0.03698        0.02615
   55391.059340       0.000159        8.62140        0.60557        0.96371     0        7.71026        0.53983        7.69072        0.54018        0.01953        0.01953
   55391.059751       0.000252        7.81054        0.45500        0.99210     0        7.19511        0.40865        7.05115        0.41076        0.14395        0.04156