/*
**
**  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
   55278.018853       0.000362       27.93662        0.91040        1.00000     0       16.12284        0.50833       15.75809        0.51353        0.36475        0.07295
   55278.019568       0.000353       28.72226        0.93476        0.99180     0       16.57304        0.52382       16.24146        0.52857        0.33159        0.07070
   55278.020279       0.000359       28.36781        0.91399        1.00000     0       16.23671        0.51217       16.00138        0.51554        0.23532        0.05883
   55278.021000       0.000362       27.61237        0.90563        1.00000     0       16.01065        0.50655       15.61672        0.51220        0.39393        0.07581
   55278.021723       0.000362       27.36636        0.90671        1.00000     0       16.02668        0.50681       15.51603        0.51411        0.51065        0.08632
   55278.022429       0.000344       29.27188        0.94886        1.00000     0       16.85158        0.53263       16.56040        0.53680        0.29119        0.06680
   55278.023130       0.000356       28.03445        0.92225        1.00000     0       16.30356        0.51531       15.85875        0.52167        0.44482        0.08121
   55278.023859       0.000373       26.86695        0.87775        1.00000     0       15.59185        0.49207       15.22427        0.49733        0.36758        0.07209
   55278.024597       0.000365       27.47005        0.89760        1.00000     0       15.99488        0.50429       15.60408        0.50987        0.39080        0.07521
   55278.025308       0.000347       29.00898        0.93957        1.00000     0       16.69446        0.52793       16.42090        0.53185        0.27356        0.06448
   55278.026023       0.000367       27.50337        0.89412        1.00000     0       15.90049        0.50082       15.55584        0.50574        0.34464        0.07035
   55278.026726       0.000336       30.06254        0.97506        1.00000     0       17.35648        0.54749       17.02632        0.55221        0.33016        0.07205
   55278.027418       0.000356       28.34135        0.92143        1.00000     0       16.33614        0.51582       16.00994        0.52049        0.32620        0.06955
   55278.028141       0.000367       27.29638        0.88908        1.00000     0       15.80584        0.49933       15.47556        0.50405        0.33028        0.06887
   55278.029165       0.000657       29.42476        0.69383        1.00000     0       17.03276        0.38771       16.62302        0.39193        0.40974        0.05738