/*
**
**  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
   55291.066036       0.000391       30.59359        1.00775        1.00000     0       14.92855        0.47067       14.60438        0.47530        0.32417        0.06617
   55291.066809       0.000382       29.24884        0.95126        1.00000     0       15.23748        0.48089       14.94739        0.48504        0.29010        0.06330
   55291.067590       0.000399       27.33948        0.89992        0.99275     0       14.71062        0.46380       14.28470        0.46987        0.42592        0.07529
   55291.068392       0.000402       27.64721        0.89903        1.00000     0       14.41248        0.45576       14.13699        0.45971        0.27549        0.06012
   55291.069164       0.000370       29.71291        0.96722        1.00000     0       15.66670        0.49518       15.35329        0.49966        0.31341        0.06682
   55291.069925       0.000391       28.41695        0.92612        1.00000     0       14.85435        0.46950       14.54369        0.47395        0.31066        0.06478
   55291.070680       0.000365       29.81275        0.97715        1.00000     0       16.05847        0.50529       15.60984        0.51168        0.44863        0.08058
   55291.071418       0.000373       29.25300        0.95003        1.00000     0       15.52972        0.49109       15.24702        0.49514        0.28271        0.06322
   55291.072165       0.000373       29.24941        0.94818        1.00000     0       15.56078        0.49158       15.29221        0.49543        0.26857        0.06161
   55291.072891       0.000353       30.62553        0.99437        1.00000     0       16.55214        0.52134       16.20837        0.52625        0.34377        0.07168
   55291.073617       0.000373       28.38089        0.92834        1.00000     0       15.54525        0.49134       15.17773        0.49660        0.36752        0.07208
   55291.074494       0.000503       30.11705        0.81639        1.00000     0       16.77505        0.43947       16.38730        0.44407        0.38775        0.06375