/*
**
**  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
   55273.950297       0.000292       21.93898        0.69658        1.00000     0       20.01348        0.63005       19.88503        0.63136        0.12845        0.04062
   55273.950873       0.000284       22.61259        0.72016        1.00000     0       20.50348        0.64741       20.37110        0.64876        0.13238        0.04186
   55273.951434       0.000278       23.35353        0.74914        1.00000     0       20.84717        0.65958       20.63095        0.66179        0.21622        0.05406
   55273.951990       0.000278       23.65169        0.75236        1.00000     0       21.01411        0.66221       20.86546        0.66373        0.14865        0.04482
   55273.952557       0.000289       22.52844        0.71980        1.00000     0       20.03331        0.63351       19.87763        0.63510        0.15568        0.04494
   55273.953147       0.000301       21.80549        0.69275        1.00000     0       19.51322        0.61309       19.35105        0.61474        0.16217        0.04498
   55273.953729       0.000281       23.22420        0.73945        1.00000     0       20.75616        0.65473       20.60904        0.65623        0.14712        0.04436
   55273.954302       0.000292       22.20250        0.70931        1.00000     0       19.87463        0.62786       19.70765        0.62957        0.16698        0.04631
   55273.955051       0.000457       23.13983        0.58220        0.99858     0       20.74752        0.51326       20.48439        0.51537        0.26313        0.04651