/*
**
**  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)
**
**
**  Upper limits have an error listed as -1.00000.
**
*/
      BinCenter          BinHW           Rate      RateError        FracExp  Mode
   54948.878631       0.000208       30.16537        0.96902        1.00000     0
   54948.879068       0.000229       27.24215        0.86812        1.00000     0
   54948.879517       0.000220       28.30216        0.90662        1.00000     0
   54948.879968       0.000231       27.25614        0.86916        1.00000     0
   54948.880425       0.000226       27.78090        0.88701        1.00000     0
   54948.880868       0.000217       28.62618        0.91487        1.00000     0
   54948.881308       0.000223       27.80272        0.89199        1.00000     0
   54948.881753       0.000223       27.99786        0.89182        1.00000     0
   54948.882199       0.000223       27.88394        0.89812        1.00000     0
   54948.882647       0.000226       27.76934        0.88140        1.00000     0
   54948.883093       0.000220       28.25814        0.90352        1.00000     0
   54948.883542       0.000229       27.30058        0.87073        1.00000     0
   54948.883993       0.000223       28.14265        0.89815        1.00000     0
   54948.884441       0.000226       27.72370        0.88124        1.00000     0
   54948.884890       0.000223       27.83611        0.89260        1.00000     0
   54948.885327       0.000214       29.25631        0.93163        1.00000     0
   54948.885755       0.000214       28.96284        0.92700        1.00000     0
   54948.886195       0.000226       27.70023        0.88298        1.00000     0
   54948.886646       0.000226       27.55387        0.88383        1.00000     0
   54948.887196       0.000324       27.75802        0.73993        0.99118     0
   54948.948521       0.000226       27.50078        0.88414        0.99382     0
   54948.948967       0.000220       28.37867        0.90299        1.00000     0
   54948.949407       0.000220       28.14744        0.90099        1.00000     0
   54948.949855       0.000229       27.26839        0.87530        1.00000     0
   54948.950321       0.000237       26.43460        0.84598        1.00000     0
   54948.950787       0.000229       27.06059        0.86744        1.00000     0
   54948.951241       0.000226       27.74533        0.88231        1.00000     0
   54948.951690       0.000223       28.00415        0.89275        1.00000     0
   54948.952141       0.000229       27.11826        0.86840        1.00000     0
   54948.952590       0.000220       28.37514        0.90669        1.00000     0
   54948.953032       0.000223       27.89076        0.89095        1.00000     0
   54948.953466       0.000211       29.62966        0.94137        1.00000     0
   54948.953921       0.000243       25.58344        0.81645        1.00000     0
   54948.954392       0.000229       26.89836        0.86860        1.00000     0
   54948.954855       0.000234       26.47826        0.84946        1.00000     0
   54948.955307       0.000217       28.60629        0.91427        1.00000     0
   54948.955741       0.000217       28.69229        0.91562        1.00000     0
   54948.956180       0.000223       27.77445        0.89451        1.00000     0
   54948.956658       0.000255       26.06281        0.80937        1.00000     0