/*
**
**  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
   55227.164500       0.000391        7.22166        0.53549        0.97778     0        3.03536        0.21463        2.96315        0.21531        0.07221        0.01702
   55227.165458       0.000561        6.65822        0.48067        0.96392     0        2.15332        0.15188        2.11084        0.15228        0.04247        0.01097
   55227.166548       0.000530        6.78946        0.49274        0.97814     0        2.23836        0.15828        2.18807        0.15875        0.05029        0.01220
   55227.167665       0.000587        6.55724        0.47189        0.91626     0        2.17567        0.15308        2.13296        0.15348        0.04270        0.01103
   55227.168855       0.000602        5.88159        0.43168        0.97115     0        1.99342        0.14060        1.92526        0.14124        0.06816        0.01337
   55227.170035       0.000579        6.32052        0.46224        0.95500     0        2.09773        0.14833        2.03674        0.14890        0.06099        0.01300
   55227.171236       0.000622        5.89092        0.43564        0.93953     0        1.99342        0.14060        1.91216        0.14136        0.08126        0.01460
   55227.172480       0.000622        6.17414        0.44458        0.94884     0        1.99351        0.13992        1.94939        0.14033        0.04413        0.01070
   55227.174390       0.001288        5.54702        0.28800        0.94607     0        1.86534        0.09421        1.82132        0.09451        0.04402        0.00744