/*
**
**  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
   55659.243572       0.000211       17.27745        1.25413        0.98630     0
   55659.244171       0.000388       16.11316        1.18399        0.60448     0
   55659.244802       0.000243       15.87681        1.13771        0.98810     0
   55659.245285       0.000240       15.97628        1.15497        0.98795     0
   55659.245777       0.000252       16.29840        1.17515        0.93103     0
   55659.246240       0.000211       17.90953        1.30601        0.98630     0
   55659.246654       0.000203       19.34062        1.38848        0.97143     0
   55659.247076       0.000220       17.36251        1.25334        0.98684     0
   55659.247519       0.000223       17.00305        1.22985        1.00000     0
   55659.247971       0.000229       16.60519        1.19037        1.00000     0
   55659.248448       0.000249       15.35522        1.11633        0.97674     0
   55659.248911       0.000214       17.76016        1.26949        1.00000     0
   55659.249339       0.000214       17.79982        1.28864        0.98649     0
   55659.249805       0.000252       15.13334        1.08942        0.98851     0
   55659.250283       0.000226       16.87085        1.20592        1.00000     0
   55659.250728       0.000220       18.23956        1.30713        0.94737     0
   55659.251174       0.000226       17.02295        1.23381        0.97436     0
   55659.251654       0.000255       14.71961        1.06722        1.00000     0
   55659.252114       0.000205       19.47852        1.40361        0.94366     0
   55659.252681       0.000362       16.27143        1.16475        0.64801     0
   55659.253312       0.000269       14.13989        1.03403        0.97849     0
   55659.253810       0.000229       16.96678        1.22788        0.97468     0
   55659.254267       0.000229       16.73815        1.20341        0.98734     0
   55659.254773       0.000278       13.98182        1.02057        0.96875     0
   55659.255378       0.000327       13.93559        1.02387        0.82302     0
   55659.255945       0.000240       15.43036        1.13517        1.00000     0
   55659.256425       0.000240       15.68192        1.15183        0.98795     0
   55659.256912       0.000246       15.66503        1.14836        0.97647     0
   55659.257398       0.000240       16.04001        1.17623        0.98795     0