/*
**
**  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
   55545.497523       0.000547       15.62253        0.51149        0.98942     0       10.72373        0.33894       10.52019        0.34059        0.20353        0.03346
   55545.498522       0.000451       15.80225        0.51389        1.00000     0       12.86757        0.40650       12.61067        0.41007        0.25690        0.05399
   55545.499413       0.000440       16.14260        0.52686        1.00000     0       13.17983        0.41678       12.89397        0.42085        0.28586        0.05835
   55545.500284       0.000431       16.47212        0.53748        1.00000     0       13.45864        0.42539       13.16702        0.42953        0.29161        0.05953
   55545.501178       0.000463       15.48195        0.50071        0.99375     0       12.59958        0.39843       12.40601        0.40119        0.19357        0.04695
   55545.502092       0.000451       15.77648        0.51359        1.00000     0       12.84188        0.40610       12.58656        0.40973        0.25532        0.05443
   55545.502992       0.000448       15.90612        0.51250        1.00000     0       12.95058        0.40912       12.77538        0.41162        0.17520        0.04524
   55545.504057       0.000616       15.20580        0.49723        0.75584     0       12.49339        0.39429       12.18976        0.39859        0.30363        0.05843
   55545.505455       0.000781       15.50603        0.38997        0.99658     0       12.71639        0.30769       12.37998        0.31135        0.33641        0.04758