/*
**
**  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
   54973.851645       0.000312       20.58696        0.66354        1.00000     0       18.58643        0.58717       18.33295        0.59080        0.25348        0.06545
   54973.852291       0.000333       19.13907        0.62239        1.00000     0       17.42024        0.55088       17.08697        0.55566        0.33328        0.07273
   54973.852950       0.000327       19.98159        0.64189        0.98228     0       18.10252        0.57160       17.88877        0.57466        0.21375        0.05928
   54973.853601       0.000324       19.63490        0.63836        1.00000     0       17.94052        0.56648       17.58202        0.57161        0.35850        0.07643
   54973.854403       0.000477       20.50735        0.53466        0.99644     0       18.59404        0.47599       18.36092        0.47870        0.23312        0.05087
   54973.893821       0.000440       17.92393        0.58119        0.99962     0       13.18477        0.41694       12.99194        0.41972        0.19283        0.04821
   54973.894689       0.000428       17.10339        0.55892        1.00000     0       13.52246        0.42783       13.22551        0.43210        0.29695        0.06062
   54973.895523       0.000405       18.22316        0.58528        1.00000     0       14.32380        0.45273       14.16683        0.45499        0.15696        0.04531
   54973.896313       0.000385       18.98647        0.61246        1.00000     0       15.18312        0.47822       14.93528        0.48178        0.24783        0.05842
   54973.897314       0.000616       18.17150        0.47589        0.99718     0       14.61008        0.37122       14.30832        0.37470        0.30176        0.05101
   54973.909385       0.000443       21.91995        0.71383        0.99436     0       13.19425        0.41682       12.94417        0.42038        0.25008        0.05457
   54973.910242       0.000414       22.06207        0.71646        1.00000     0       14.00929        0.44301       13.75590        0.44662        0.25339        0.05666
   54973.911058       0.000402       22.60357        0.73370        1.00000     0       14.45567        0.45644       14.18196        0.46034        0.27371        0.05973
   54973.911868       0.000408       22.49345        0.72869        1.00000     0       14.37850        0.45198       14.08297        0.45617        0.29553        0.06162