/*
**
**  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
   55275.016852       0.000240       26.67971        0.86185        1.00000     0       24.25724        0.76517       23.86190        0.77082        0.39534        0.09318
   55275.017335       0.000243       26.68246        0.85359        1.00000     0       24.11156        0.75832       23.82943        0.76234        0.28213        0.07825
   55275.017821       0.000243       26.23582        0.84396        1.00000     0       24.04001        0.75719       23.69278        0.76215        0.34723        0.08681
   55275.018304       0.000240       26.70886        0.85352        1.00000     0       24.32965        0.76631       24.08805        0.76977        0.24160        0.07284
   55275.018790       0.000246       26.10300        0.83611        1.00000     0       23.59221        0.74568       23.37774        0.74876        0.21447        0.06782
   55275.019274       0.000237       26.76616        0.86395        1.00000     0       24.52863        0.77412       24.15070        0.77952        0.37793        0.09166
   55275.019751       0.000240       26.62176        0.85471        1.00000     0       24.11242        0.76288       23.87082        0.76635        0.24160        0.07284
   55275.020237       0.000246       26.24777        0.84550        1.00000     0       23.87503        0.75013       23.46754        0.75594        0.40749        0.09348
   55275.020738       0.000255       24.96016        0.80328        1.00000     0       22.81069        0.72062       22.52068        0.72477        0.29002        0.07751
   55275.021244       0.000252       25.22915        0.81499        1.00000     0       23.14197        0.72999       22.76480        0.73538        0.37717        0.08890
   55275.021736       0.000240       26.88854        0.85997        1.00000     0       24.35379        0.76669       24.09023        0.77046        0.26356        0.07608
   55275.022216       0.000240       26.79112        0.85759        1.00000     0       24.49861        0.76897       24.16916        0.77366        0.32945        0.08506
   55275.022702       0.000246       25.99586        0.83336        1.00000     0       23.73362        0.74791       23.45481        0.75190        0.27881        0.07733
   55275.023194       0.000246       26.31302        0.84135        1.00000     0       23.85147        0.74976       23.57266        0.75374        0.27881        0.07733
   55275.023680       0.000240       26.46265        0.84956        1.00000     0       24.11242        0.76288       23.87082        0.76635        0.24160        0.07284
   55275.024175       0.000255       24.71931        0.80619        1.00000     0       22.81070        0.72062       22.31352        0.72773        0.49718        0.10149
   55275.024684       0.000255       27.14520        0.83713        0.99934     0       24.78493        0.75140       24.49472        0.75540        0.29021        0.07756