/*
**
**  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
   57473.988869       0.000475       13.27682        0.42779        1.00000     0       12.22768        0.38648       12.06338        0.38866        0.16430        0.04107
   57473.989858       0.000515       12.34116        0.39888        0.99438     0       11.36355        0.35863       11.17326        0.36115        0.19029        0.04255
   57473.990848       0.000475       13.38174        0.42910        1.00000     0       12.22768        0.38648       12.10445        0.38811        0.12322        0.03557
   57473.991829       0.000506       12.62502        0.40346        1.00000     0       11.48197        0.36255       11.38574        0.36382        0.09623        0.03043
   57473.992801       0.000466       13.76088        0.43922        1.00000     0       12.48041        0.39407       12.38627        0.39532        0.09414        0.03138
   57473.993753       0.000486       12.92629        0.41539        1.00000     0       11.91269        0.37690       11.78238        0.37863        0.13032        0.03614
   57473.994439       0.000200       10.92509        0.59109        1.00000     0        9.98764        0.53850        9.96324        0.53905        0.02441        0.02441
   57473.995122       0.000483       13.08024        0.42289        1.00000     0       11.98402        0.37916       11.80251        0.38156        0.18152        0.04278
   57473.996088       0.000483       13.12944        0.42554        1.00000     0       12.00802        0.37954       11.79625        0.38234        0.21177        0.04621
   57473.997037       0.000466       13.62524        0.44131        1.00000     0       12.53018        0.39486       12.28960        0.39803        0.24058        0.05016
   57473.997975       0.000472       13.25457        0.42961        1.00000     0       12.30269        0.38885       12.08573        0.39172        0.21697        0.04735
   57473.999201       0.000755       13.29837        0.33997        1.00000     0       12.25028        0.30664       12.06961        0.30854        0.18067        0.03414