/*
**
**  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
   56671.236514       0.000385       16.65856        0.53925        1.00000     0       15.16808        0.47799       14.89037        0.48200        0.27771        0.06210
   56671.237301       0.000402       16.09611        0.51653        1.00000     0       14.45569        0.45644       14.29626        0.45876        0.15943        0.04602
   56671.238100       0.000396       16.04625        0.51894        1.00000     0       14.63748        0.46265       14.40832        0.46597        0.22916        0.05558
   56671.238901       0.000405       15.77940        0.50772        1.00000     0       14.35244        0.45318       14.16776        0.45586        0.18468        0.04936
   56671.239703       0.000396       16.18224        0.52414        1.00000     0       14.75446        0.46449       14.47138        0.46858        0.28308        0.06177
   56671.240481       0.000382       16.87459        0.54356        1.00000     0       15.19193        0.48017       14.99606        0.48302        0.19587        0.05235
   56671.241271       0.000408       16.93904        0.52575        0.99714     0       15.43148        0.46891       15.20818        0.47203        0.22330        0.05416
   56671.305646       0.000379       16.68956        0.53606        0.99262     0       15.48326        0.48840       15.29018        0.49112        0.19308        0.05160
   56671.306421       0.000396       15.94743        0.51681        1.00000     0       14.66673        0.46311       14.40492        0.46679        0.26181        0.05854
   56671.307203       0.000385       16.41183        0.53155        0.99248     0       15.16158        0.47969       14.91703        0.48314        0.24455        0.05764
   56671.307972       0.000385       16.14203        0.52708        1.00000     0       15.07771        0.47656       14.74061        0.48131        0.33710        0.06742
   56671.308725       0.000367       17.26319        0.55061        1.00000     0       15.79004        0.49908       15.69119        0.50047        0.09885        0.03736
   56671.309483       0.000391       16.10893        0.51688        1.00000     0       14.86917        0.46974       14.70976        0.47198        0.15941        0.04602
   56671.310493       0.000619       16.02323        0.41502        1.00000     0       14.66925        0.37057       14.41785        0.37340        0.25141        0.04590