/*
**
**  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
   58457.572237       0.000353       39.12389        1.31356        1.00000     0       16.45362        0.51979       15.81533        0.52904        0.63829        0.09849
   58457.573004       0.000414       37.37886        1.22952        1.00000     0       14.05136        0.44368       13.66239        0.44933        0.38897        0.07102
   58457.573838       0.000420       36.50562        1.21164        1.00000     0       13.80229        0.43668       13.35475        0.44319        0.44754        0.07565
   58457.574703       0.000446       35.52913        1.16916        0.98701     0       13.20619        0.41720       12.84026        0.42252        0.36594        0.06681
   58457.575577       0.000428       36.24240        1.20057        1.00000     0       13.53605        0.42805       13.11011        0.43424        0.42594        0.07305
   58457.576471       0.000466       34.88442        1.14576        0.99379     0       12.55840        0.39654       12.17935        0.40002        0.37905        0.05269
   58457.577394       0.000457       35.40943        1.16226        1.00000     0       12.66665        0.40076       12.30166        0.40377        0.36499        0.04922
   58457.578302       0.000451       35.95444        1.17130        0.99359     0       12.98936        0.40974       12.68810        0.41335        0.30127        0.05451
   58457.579176       0.000422       36.43612        1.21986        1.00000     0       13.76264        0.43456       13.21634        0.44248        0.54630        0.08331
   58457.580033       0.000434       35.95236        1.18737        1.00000     0       13.39563        0.42297       12.98756        0.42890        0.40807        0.07104
   58457.580889       0.000422       36.74115        1.22947        1.00000     0       13.70775        0.43369       13.18686        0.44126        0.52089        0.08135
   58457.581977       0.000666       36.33479        0.97468        1.00000     0       13.63139        0.34457       13.08299        0.35093        0.54840        0.06650