/*
**
**  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
   57131.187289       0.000226       28.80938        0.92865        1.00000     0       25.96629        0.81665       25.52755        0.82283        0.43874        0.10065
   57131.187749       0.000234       27.10850        0.87720        1.00000     0       24.88091        0.78445       24.43619        0.79073        0.44472        0.09944
   57131.188203       0.000220       28.91612        0.93375        1.00000     0       26.49146        0.83565       26.06487        0.84167        0.42658        0.10055
   57131.188643       0.000220       28.78941        0.93355        1.00000     0       26.41238        0.83440       25.93839        0.84110        0.47398        0.10599
   57131.189097       0.000234       27.08082        0.87355        1.00000     0       24.78198        0.78289       24.42620        0.78793        0.35578        0.08894
   57131.189563       0.000231       27.50344        0.88696        1.00000     0       25.16688        0.79386       24.78414        0.79927        0.38274        0.09283
   57131.190029       0.000234       27.27274        0.87954        1.00000     0       24.97984        0.78601       24.55736        0.79197        0.42249        0.09693
   57131.190486       0.000223       28.49428        0.92253        1.00000     0       26.14741        0.82479       25.67958        0.83140        0.46783        0.10461
   57131.190946       0.000237       27.40593        0.88543        0.97398     0       25.05841        0.79281       24.69758        0.79793        0.36083        0.09021
   57131.191421       0.000237       27.35783        0.88690        0.97395     0       25.08433        0.79324       24.65583        0.79930        0.42850        0.09830
   57131.191959       0.000301       27.15169        0.87906        0.77417     0       24.88176        0.78683       24.47910        0.79253        0.40267        0.09491
   57131.193678       0.001418       28.15397        0.65078        0.31096     0       25.78278        0.58223       25.36905        0.58641        0.41373        0.06993