/*
**
**  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
   55303.114754       0.000634       11.91798        0.38299        0.83564     0       10.99065        0.34686       10.83436        0.34816        0.15630        0.03008
   55303.115918       0.000530       11.94559        0.38492        1.00000     0       10.94719        0.34618       10.78510        0.34753        0.16209        0.03063
   55303.116956       0.000509       12.40853        0.40015        1.00000     0       11.38259        0.35995       11.20803        0.36141        0.17456        0.03241
   55303.117989       0.000524       12.01586        0.38687        1.00000     0       11.05708        0.34983       10.90491        0.35110        0.15218        0.02984
   55303.119063       0.000550       11.55452        0.37255        1.00000     0       10.53333        0.33326       10.37721        0.33456        0.15612        0.02950
   55303.120171       0.000558       11.41270        0.36491        1.00000     0       10.40074        0.32857       10.30193        0.32940        0.09880        0.02329
   55303.121265       0.000535       11.87796        0.37938        1.00000     0       10.86133        0.34295       10.76398        0.34376        0.09735        0.02361
   55303.122315       0.000515       12.51645        0.39788        0.99438     0       11.35223        0.35845       11.29238        0.35895        0.05985        0.01893
   55303.123565       0.000735       11.89273        0.32610        1.00000     0       10.80539        0.29193       10.68027        0.29282        0.12512        0.02284