/*
**
**  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
   57778.463983       0.000246       25.91755        0.82514        1.00000     0       23.78070        0.74865       23.59511        0.75120        0.18559        0.06186
   57778.464469       0.000240       26.16427        0.84319        1.00000     0       24.13650        0.76326       23.81972        0.76763        0.31678        0.08179
   57778.464952       0.000243       26.15077        0.83446        1.00000     0       24.01610        0.75681       23.80743        0.75968        0.20867        0.06599
   57778.465435       0.000240       26.37968        0.84725        1.00000     0       24.35373        0.76669       24.01583        0.77133        0.33789        0.08447
   57778.465904       0.000229       27.38808        0.88645        1.00000     0       25.33324        0.80151       24.93386        0.80702        0.39938        0.09413
   57778.466370       0.000237       26.66449        0.85494        1.00000     0       24.55300        0.77450       24.27511        0.77833        0.27789        0.07707
   57778.466841       0.000234       26.95293        0.86765        1.00000     0       24.90559        0.78484       24.53771        0.78990        0.36788        0.08922
   57778.467307       0.000231       27.67492        0.87887        1.00000     0       25.39220        0.79741       25.19501        0.80011        0.19719        0.06573
   57778.467770       0.000231       27.31047        0.87740        1.00000     0       25.19187        0.79426       24.86321        0.79878        0.32866        0.08486
   57778.468384       0.000382       26.80288        0.67644        0.99943     0       24.70669        0.61252       24.40110        0.61583        0.30559        0.06372
   57778.600959       0.000249       25.96060        0.83471        0.99528     0       23.49861        0.74161       23.19900        0.74592        0.29961        0.08007
   57778.601474       0.000266       24.02139        0.77921        1.00000     0       21.88420        0.69032       21.46608        0.69632        0.41812        0.09124
   57778.601986       0.000246       26.16843        0.84096        1.00000     0       23.68642        0.74716       23.38472        0.75150        0.30170        0.08063
   57778.602472       0.000240       26.82138        0.86009        1.00000     0       24.23305        0.76479       23.96821        0.76860        0.26483        0.07645
   57778.602970       0.000258       24.97361        0.80494        1.00000     0       22.66689        0.71429       22.31700        0.71932        0.34989        0.08486
   57778.603702       0.000475       25.47155        0.59874        0.99509     0       23.05381        0.53198       22.76197        0.53505        0.29184        0.05723