/*
**
**  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
   55640.106543       0.000492       13.20893        0.42756        1.00000     0       11.83146        0.37340       11.62647        0.37635        0.20500        0.04703
   55640.107498       0.000463       14.19118        0.46196        1.00000     0       12.53337        0.39614       12.28117        0.39977        0.25220        0.05377
   55640.108430       0.000469       14.11871        0.45504        1.00000     0       12.39100        0.39145       12.22117        0.39390        0.16983        0.04385
   55640.109362       0.000463       14.22157        0.45606        1.00000     0       12.50833        0.39575       12.39369        0.39740        0.11464        0.03625
   55640.110299       0.000475       14.02509        0.45216        1.00000     0       12.20324        0.38609       12.04667        0.38835        0.15658        0.04185
   55640.111286       0.000512       12.94754        0.41778        1.00000     0       11.31828        0.35792       11.16284        0.36016        0.15544        0.04013
   55640.112270       0.000472       14.09724        0.45512        1.00000     0       12.33956        0.38943       12.14827        0.39219        0.19130        0.04640
   55640.113248       0.000506       13.10612        0.42493        1.00000     0       11.51632        0.36309       11.29622        0.36625        0.22010        0.04803
   55640.114228       0.000475       14.02935        0.45133        1.00000     0       12.25211        0.38687       12.09553        0.38912        0.15658        0.04185
   55640.115180       0.000477       13.93738        0.44635        1.00000     0       12.12929        0.38375       12.02924        0.38520        0.10005        0.03335
   55640.116135       0.000477       13.85294        0.44830        1.00000     0       12.16571        0.38433       11.96562        0.38721        0.20009        0.04716
   55640.117070       0.000457       14.52915        0.47133        0.99367     0       12.76010        0.40351       12.53813        0.40671        0.22197        0.05092
   55640.118123       0.000596       14.24661        0.40758        1.00000     0       12.41873        0.34752       12.23176        0.34991        0.18698        0.04080