/*
**
**  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
   55995.061593       0.000318       19.77428        0.63706        1.00000     0       18.19388        0.57563       17.96301        0.57871        0.23088        0.05961
   55995.062566       0.000654       19.21164        0.43787        0.99641     0       17.63235        0.39606       17.45190        0.39777        0.18045        0.03683
   55995.387895       0.000365       18.04253        0.58868        0.98629     0       16.31386        0.51282       15.89964        0.51876        0.41422        0.07828
   55995.388601       0.000341       18.97765        0.61802        1.00000     0       17.11320        0.53902       16.72370        0.54462        0.38950        0.07790
   55995.389281       0.000339       18.78003        0.62727        1.00000     0       17.22522        0.54308       16.54955        0.55277        0.67566        0.10304
   55995.389944       0.000324       19.68959        0.65305        1.00000     0       17.95843        0.56676       17.35109        0.57549        0.60734        0.09985
   55995.390615       0.000347       18.63461        0.60469        1.00000     0       16.72781        0.52845       16.42140        0.53287        0.30641        0.06851
   55995.391333       0.000370       17.22401        0.56989        1.00000     0       15.66667        0.49518       15.17834        0.50221        0.48833        0.08375
   55995.392062       0.000359       18.10770        0.58932        0.99194     0       16.27095        0.51479       15.95707        0.51933        0.31388        0.06849
   55995.392771       0.000350       18.10284        0.60566        1.00000     0       16.60612        0.52435       15.95279        0.53373        0.65333        0.09963
   55995.393451       0.000330       19.31930        0.63957        1.00000     0       17.57307        0.55571       17.02477        0.56361        0.54830        0.09403
   55995.394412       0.000631       18.70458        0.45886        1.00000     0       17.16615        0.39718       16.48307        0.40436        0.68309        0.07590