/*
**
**  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
   57870.214209       0.000501       30.00264        0.99296        0.99422     0       11.65895        0.36850       11.32232        0.37124        0.33662        0.04498
   57870.215240       0.000530       30.05248        0.97803        1.00000     0       10.99098        0.34687       10.72544        0.34903        0.26554        0.03873
   57870.216275       0.000506       31.68479        1.03939        1.00000     0       11.43618        0.36182       11.11124        0.36447        0.32494        0.04382
   57870.217323       0.000541       28.70105        0.93706        0.99465     0       10.79216        0.34094       10.51423        0.34320        0.27793        0.03931
   57870.218382       0.000518       31.07951        1.00599        1.00000     0       11.22539        0.35445       11.00591        0.35623        0.21949        0.03561
   57870.219429       0.000530       30.23457        0.98632        0.99454     0       11.01835        0.34826       10.74567        0.35047        0.27268        0.03936
   57870.220488       0.000530       30.79563        1.00730        1.00000     0       11.03477        0.34756       10.70708        0.35022        0.32769        0.04303
   57870.221547       0.000530       30.12849        0.98671        1.00000     0       10.95814        0.34635       10.65305        0.34883        0.30509        0.04152
   57870.222279       0.000203       28.07194        1.56332        1.00000     0        9.98806        0.53465        9.67789        0.53892        0.31017        0.06769
   57870.223012       0.000530       31.07327        1.00623        1.00000     0       10.95814        0.34635       10.74909        0.34805        0.20904        0.03437
   57870.224163       0.000622       31.42812        0.93462        1.00000     0       11.32118        0.32479       11.00379        0.32713        0.31739        0.03907