/*
**
**  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
   55974.323739       0.000119       13.47766        0.95457        1.00000     0        9.87009        0.69446        9.81948        0.69538        0.05061        0.03579
   55974.323977       0.000119       13.11297        0.93771        1.00000     0        9.82123        0.69274        9.72001        0.69458        0.10122        0.05061
   55974.324217       0.000122       12.59264        0.90699        1.00000     0        9.92128        0.68792        9.62484        0.69322        0.29644        0.08558
   55974.324463       0.000124       12.16241        0.86202        1.00000     0        9.45761        0.66379        9.38522        0.66511        0.07239        0.04179
   55974.325114       0.000527       13.86886        0.44768        1.00000     0       11.02935        0.34843       10.84123        0.34997        0.18813        0.03275
   55974.326213       0.000573       12.72565        0.41173        1.00000     0       10.10774        0.31979        9.92957        0.32125        0.17816        0.03055
   55974.327333       0.000547       13.56017        0.43508        0.99471     0       10.65604        0.33697       10.53462        0.33797        0.12141        0.02589
   55974.328314       0.000434       12.57145        0.47026        1.00000     0        9.98997        0.36527        9.81012        0.36697        0.17984        0.03527
   55974.329309       0.000561       12.76739        0.41475        1.00000     0       10.32647        0.32655       10.10720        0.32834        0.21927        0.03424
   55974.330423       0.000553       13.44911        0.42891        1.00000     0       10.62502        0.33383       10.50008        0.33484        0.12494        0.02605
   55974.331193       0.000217       12.76088        0.66802        1.00000     0        9.98997        0.51657        9.89313        0.51786        0.09684        0.03660
   55974.331529       0.000119       12.39215        0.89429        1.00000     0        9.82123        0.69274        9.64409        0.69596        0.17714        0.06695
   55974.331775       0.000127       12.51794        0.86597        1.00000     0        9.92562        0.67225        9.76055        0.67514        0.16506        0.06239
   55974.332023       0.000122       11.72932        0.85741        1.00000     0        9.58739        0.67624        9.31565        0.68119        0.27174        0.08193
   55974.332701       0.000556       13.12127        0.42383        1.00000     0       10.44447        0.33012       10.26614        0.33157        0.17833        0.03104
   55974.333380       0.000124       12.52823        0.87147        1.00000     0        9.69055        0.67192        9.66642        0.67235        0.02413        0.02413
   55974.333626       0.000122       12.05152        0.86176        1.00000     0        9.63509        0.67792        9.51157        0.68017        0.12352        0.05524
   55974.334289       0.000541       13.53444        0.43905        0.99465     0       10.75985        0.34043       10.54788        0.34216        0.21197        0.03439
   55974.335814       0.000984       13.61608        0.32425        1.00000     0       10.77087        0.25192       10.61829        0.25284        0.15258        0.02158