/*
**
**  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
   54973.559102       0.000272       23.44692        0.75965        1.00000     0       21.46126        0.67630       21.05378        0.68212        0.40748        0.08892
   54973.559646       0.000272       23.84311        0.75694        1.00000     0       21.48257        0.67664       21.36615        0.67830        0.11642        0.04753
   54973.560205       0.000286       22.35093        0.72226        1.00000     0       20.47853        0.64374       20.09164        0.64925        0.38690        0.08443
   54973.560760       0.000269       23.82370        0.76659        1.00000     0       21.75665        0.68459       21.42324        0.68935        0.33341        0.08086
   54973.561293       0.000263       24.32259        0.77989        1.00000     0       22.10273        0.69756       21.86221        0.70100        0.24052        0.06943
   54973.561837       0.000281       23.05328        0.73771        1.00000     0       20.81816        0.65571       20.59252        0.65894        0.22564        0.06514
   54973.562395       0.000278       23.14352        0.73817        1.00000     0       20.95155        0.66122       20.79955        0.66340        0.15200        0.05374
   54973.562951       0.000278       22.88510        0.74223        1.00000     0       20.97241        0.66155       20.57342        0.66726        0.39899        0.08707
   54973.563521       0.000292       21.74150        0.70287        1.00000     0       19.85484        0.62755       19.54783        0.63195        0.30700        0.07446
   54973.564114       0.000301       21.42076        0.68439        1.00000     0       19.47473        0.61249       19.26427        0.61549        0.21046        0.06075
   54973.564690       0.000275       23.34784        0.74567        1.00000     0       21.17209        0.66819       20.99929        0.67066        0.17280        0.05760
   54973.565251       0.000286       22.30990        0.71726        1.00000     0       20.31665        0.64119       20.05872        0.64488        0.25793        0.06894
   54973.565833       0.000295       21.79078        0.69794        1.00000     0       19.66018        0.62140       19.48136        0.62397        0.17882        0.05655
   54973.566408       0.000281       22.66320        0.73013        1.00000     0       20.65294        0.65310       20.38969        0.65688        0.26325        0.07036
   54973.566961       0.000272       23.44431        0.75512        1.00000     0       21.37601        0.67496       21.08496        0.67913        0.29106        0.07515
   54973.567528       0.000295       21.64952        0.70046        1.00000     0       19.67982        0.62171       19.35795        0.62632        0.32187        0.07587
   54973.568098       0.000275       23.40915        0.74770        1.00000     0       21.27753        0.66985       21.06633        0.67287        0.21119        0.06368
   54973.568654       0.000281       22.50951        0.73138        1.00000     0       20.63228        0.65278       20.25621        0.65817        0.37607        0.08409
   54973.569227       0.000292       21.91060        0.70783        1.00000     0       19.93418        0.62880       19.60911        0.63345        0.32506        0.07662
   54973.569956       0.000437       23.87641        0.60085        1.00000     0       21.61214        0.53547       21.38263        0.53805        0.22950        0.05265