/*
**
**  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
   57739.922627       0.000194       14.37964        1.05850        1.00000     0        6.09971        0.42706        5.91407        0.43041        0.18563        0.05359
   57739.922995       0.000174       13.01334        0.97298        1.00000     0        6.67778        0.47219        6.38412        0.47753        0.29366        0.07122
   57739.923368       0.000200       13.37766        0.98565        1.00000     0        5.89387        0.41367        5.68357        0.41747        0.21030        0.05620
   57739.923813       0.000246       13.39075        0.97106        0.98824     0        4.79369        0.33812        4.69446        0.33925        0.09924        0.02771
   57739.924291       0.000231       14.62387        1.04967        0.98750     0        5.07173        0.35863        5.00567        0.35923        0.06607        0.02089
   57739.924760       0.000237       13.75256        1.01136        1.00000     0        4.91061        0.34637        4.73240        0.34800        0.17821        0.03368
   57739.925275       0.000278       11.96755        0.87450        0.97917     0        4.26241        0.30140        4.14026        0.30252        0.12215        0.02604
   57739.925769       0.000217       15.17032        1.11020        1.00000     0        5.34223        0.37775        5.18217        0.37922        0.16005        0.03337
   57739.926209       0.000223       16.14663        1.14871        0.96104     0        5.60392        0.38950        5.49108        0.39052        0.11285        0.02821
   57739.926675       0.000243       13.90372        1.02218        0.98810     0        4.82731        0.34134        4.66382        0.34285        0.16349        0.03206
   57739.927164       0.000246       13.62275        0.98274        0.98824     0        4.79369        0.33812        4.70049        0.33898        0.09320        0.02406
   57739.927639       0.000229       15.13312        1.09799        0.98734     0        5.13676        0.36322        5.02300        0.36427        0.11375        0.02759
   57739.928128       0.000260       12.76213        0.92072        1.00000     0        4.49637        0.31636        4.39779        0.31727        0.09858        0.02391
   57739.928637       0.000249       13.89090        1.00743        0.97674     0        4.76984        0.33728        4.66422        0.33825        0.10563        0.02562
   57739.929137       0.000252       13.59591        0.98614        0.97701     0        4.71373        0.33331        4.60935        0.33427        0.10438        0.02532
   57739.929673       0.000284       11.75025        0.86120        1.00000     0        4.08844        0.28910        3.96062        0.29027        0.12782        0.02609
   57739.930168       0.000211       16.37615        1.18207        0.98630     0        5.64829        0.39643        5.51056        0.39769        0.13773        0.03160
   57739.930604       0.000226       15.02434        1.08958        0.98718     0        5.30754        0.37160        5.14486        0.37308        0.16267        0.03321
   57739.931024       0.000194       15.42811        1.11654        1.00000     0        6.03990        0.42497        5.90798        0.42701        0.13192        0.04176
   57739.931403       0.000185       16.46029        1.24165        1.00000     0        6.29172        0.44378        5.96729        0.44967        0.32444        0.07255
   57739.931808       0.000220       13.98287        0.99754        1.00000     0        5.35101        0.37557        5.28271        0.37681        0.06830        0.03055
   57739.932320       0.000292       13.98446        0.87302        0.99010     0        5.44907        0.33040        5.32449        0.33235        0.12458        0.03596