batgrbproduct Analysis for Trigger=657321

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Nov  1 01:30:34 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger657321
======================================================================

  Trigger: 00657321      Segment: 000

  BAT Trigger Time: 465416992   [s; MET]
      Trigger Stop: 465417056   [s; MET]
               UTC: 2015-10-01T18:29:36.787760    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 336.844828924081   Dec: 64.6607919699014  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.4
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.4

  Flight Position:   [ source = BAT ]
    RA: 336.844828924081   Dec: 64.6607919699014  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 336.959072323374   Dec: 64.6468660404292  [deg; J2000]  
        { 22h 27m 50.2s , +64d 38' 48.7" }
         +/- 2.13371853446056 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.15428672098023 [arcmin] (formal 1-sigma fit error)
    SNR: 10.3020221758911
 
  Angular difference between Flight and Ground position is 3.051005 arcmin
 
  Partial Coding Fraction: 0.2851562    [ including projection effects ]

  Duration
     T90: 131.520000040531 +/- 26.8529220711676
        Measured from: -27.3360000252724
                   to: 104.184000015259     [s; relative to TRIGTIME]
     T50: 63.6000000238419 +/- 18.0376494853698
        Measured from: 10.5680000185966
                   to: 74.1680000424385     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 47.4679999947548     
                   to: 48.4679999947548     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -39.9599999785423     
                   to: 118.680000007153     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.259749   1.122723   0.479636   0.017222
           0.126696   0.130786   0.113448   0.099929 [error]
 Peak      0.021325   0.024169   0.018183   0.028176
           0.010932   0.011765   0.009571   0.008824 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 3.90e-07 4.90e-07 4.50e-07 7.20e-07 1.58e-06 2.05e-06   erg/cm2
              Error 6.63e-08 6.36e-08 1.09e-07 3.41e-07 2.48e-07 4.71e-07   erg/cm2
Peak flux Power-law 1.11e-01 1.57e-01 1.66e-01 3.23e-01 5.36e-01 7.57e-01   ph/cm2/s
              Error 1.33e-01 1.32e-01 7.03e-02 1.03e+00 2.78e-01 4.02e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.87e-07 4.97e-07 4.47e-07 5.87e-07 1.56e-06 1.92e-06   erg/cm2
              Error 6.93e-08 7.78e-08 1.19e-07 5.52e-07 2.76e-07 6.16e-07   erg/cm2
Peak flux Cutoff-PL 1.27e-01 1.68e-01 1.65e-01 2.91e-01 5.53e-01 7.56e-01   ph/cm2/s
              Error 1.34e-01 1.33e-01 7.12e-02 5.36e-01 -------- 4.08e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.125    0.254    -      -           1.07e-03 1.87e-04   43.890 57
CPL   1.973    0.000       7.2    0.0      1.31e-03 0.00e+00   43.870 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL   -2.339    1.200    -      -           8.76e-05 2.50e-04   53.890 57
CPL   0.964    1.209    9999.4    0.0      4.76e-03 1.25e-02   54.300 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  158.640  -39.960  118.680
T90   131.520  -27.336  104.184
T50    63.600   10.568   74.168
Peak    1.000   47.468   48.468
  • Click here for the BAT GCN circular template

    Image

    Pre-slew 15.0-350.0 keV image (Event data)

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
      336.9591    64.6469   0.0186    33.1457   123.0414         2.8525559     10.302 TRIG_00657321                 
     
    Foreground time interval of the image:
    -39.960  72.901 (delta_t = 112.861 [sec])
    Background time interval of the image:
    -239.000 -39.960 (delta_t = 199.040 [sec])
    

    Lightcurves

    Notes:

    1 s binning

    From T0-310 s to T0+310 s
    From T100_start - 20 s to T100_end + 30 s
    Full time interval

    64 ms binning

    Full time interval
    From T100_start to T100_end
    From T0-5 sec to T0+5 sec

    16 ms binning

    From T100_start-5 s to T100_start+5 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    8 ms binning

    From T100_start-3 s to T100_start+3 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    2 ms binning

    From T100_start-1 s to T100_start+1 s
    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    SN=5 or 10 sec. binning (whichever binning is satisfied first)

    SN=5 or 10 sec. binning (T < 200 sec)

    Quad-rate summed light curves (from T0-300s to T0+1000s)

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from  -39.960 sec. to  118.680 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.12502     ( -0.243778   0.264833 )
    Norm@50keV  : 1.06618E-03    ( -0.000190331   0.00018441 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          43.89 using 59 PHA bins.
    # Reduced chi-squared =         0.7700 for     57 degrees of freedom 
    # Null hypothesis probability =   8.985070e-01
     
    Photon flux (15-150 keV)    in 158.6 sec: 0.169840 ( -0.0211987  0.0211991 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.57512e-06 ( -2.44355e-07  2.51911e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -39.960 sec. to  118.680 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.97326     (     )
    Epeak [keV] : 7.21958      (   )
    Norm@50keV  : 1.30974E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          43.87 using 59 PHA bins.
    # Reduced chi-squared =         0.7834 for     56 degrees of freedom 
    # Null hypothesis probability =   8.804081e-01
     
    Photon flux (15-150 keV)    in 158.6 sec: 0.169237 ( -0.021812  0.02162 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.558e-06 ( -2.8535e-07  2.65787e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  -39.960 sec. to  118.680 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 4.90728   ( -4.90728   -4.90728 )
    beta        : -2.19774    ( -0.353668   0.272444 )
    Epeak [keV] : 19.2895      ( -19.2895 4.6256 )
    Norm@50keV   : 915.558    ( -114.078   1.99001e+06 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          43.37 using 59 PHA bins.
    # Reduced chi-squared =         0.7886 for     55 degrees of freedom 
    # Null hypothesis probability =   8.714448e-01
     
    Photon flux (15-150 keV)    in 158.6 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 8.59047  (-1.29323  1.52146)
    R^2/D10^2   : 0.138037  (-0.0649951   0.12498)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.60 using 59 PHA bins.
    # Reduced chi-squared =          1.046 for     57 degrees of freedom 
    # Null hypothesis probability =   3.811242e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.065e-07   7.129e-08
    25- 50  6.047e-07   1.236e-07
    50-150  1.996e-07   7.790e-08
    15-150  1.111e-06   2.156e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 53.1506       (-16.8059      30.3396)
    Norm        : 0.928264       (-0.190028     0.264347)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          45.15 using 59 PHA bins.
    # Reduced chi-squared =         0.7921 for     57 degrees of freedom 
    # Null hypothesis probability =   8.716685e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.648e-07   5.607e-08
    25- 50  5.351e-07   7.986e-08
    50-150  5.497e-07   2.016e-07
    15-150  1.450e-06   2.791e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.19970        (-1.94334      2.17508)
    R1^2/D10^2  : 0.765129        (-0.537172      4.43961)
    kT2 [keV]   : 19.0787        (-7.58186      28.3797)
    R2^2/D10^2  : 4.27428E-03    (-0.00388736   0.0291657)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.85 using 59 PHA bins.
    # Reduced chi-squared =         0.8155 for     55 degrees of freedom 
    # Null hypothesis probability =   8.338550e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.927e-07   2.181e-07
    25- 50  4.810e-07   2.276e-07
    50-150  6.376e-07   3.742e-07
    15-150  1.511e-06   7.160e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from   47.468 sec. to   48.468 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -2.33886     ( -1.5569   0.842965 )
    Norm@50keV  : 8.76267E-05    ( -8.75513e-05   0.000412328 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.89 using 59 PHA bins.
    # Reduced chi-squared =         0.9455 for     57 degrees of freedom 
    # Null hypothesis probability =   5.923449e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.535537 ( -0.280634  0.276301 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.18635e-08 ( -2.19646e-08  2.19478e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   47.468 sec. to   48.468 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.964034     ( -1.61153   0.80612 )
    Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
    Norm@50keV  : 4.75573E-03    ( -0.00474852   0.0201835 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.30 using 59 PHA bins.
    # Reduced chi-squared =         0.9696 for     56 degrees of freedom 
    # Null hypothesis probability =   5.394582e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.552676 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.16163e-08 ( -2.17668e-08  2.16042e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   47.468 sec. to   48.468 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 4.99315   ( -4.99315   -4.99315 )
    beta        : -1.00281    ( -1.24275   1.54416 )
    Epeak [keV] : 27.6508      ( -27.6508 54.1441 )
    Norm@50keV   : 170.534    ( -70.9009   2.90941e+06 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.13 using 59 PHA bins.
    # Reduced chi-squared =         0.9842 for     55 degrees of freedom 
    # Null hypothesis probability =   5.079016e-01
     
    Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 48.0359  (-36.6987  -48.6177)
    R^2/D10^2   : 1.96891E-03  (-0.00188113   0.140535)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.87 using 59 PHA bins.
    # Reduced chi-squared =         0.9976 for     57 degrees of freedom 
    # Null hypothesis probability =   4.800970e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.115e-10   3.292e-10
    25- 50  3.663e-09   2.378e-09
    50-150  4.301e-08   2.545e-08
    15-150  4.718e-08   2.930e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.352       (-199.362      -199.362)
    Norm        : 2.40870       (-1.07551     1.07537)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.18 using 59 PHA bins.
    # Reduced chi-squared =         0.9856 for     57 degrees of freedom 
    # Null hypothesis probability =   5.058315e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.998e-09   4.155e-09
    25- 50  1.154e-08   7.160e-09
    50-150  2.530e-08   1.656e-08
    15-150  4.284e-08   2.826e-08
    
    Double BB
    R1^2/D10^2  : 0.352536        (-0.333707      0.760448)
    kT2 [keV]   : 199.363        (-199.363      -199.363)
    R2^2/D10^2  : 1.33780E-04    (-7.22529e-05   0.00475618)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          52.33 using 59 PHA bins.
    #Fit statistic : Chi-Squared =          52.03 using 59 PHA bins.
    #Fit statistic : Chi-Squared =          52.01 using 59 PHA bins.
    # Reduced chi-squared =         0.9514 for     55 degrees of freedom 
    # Reduced chi-squared =         0.9460 for     55 degrees of freedom 
    # Reduced chi-squared =         0.9456 for     55 degrees of freedom 
    # Null hypothesis probability =   5.773761e-01
    # Null hypothesis probability =   5.889132e-01
    # Null hypothesis probability =   5.895802e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.565e-09   3.222e-09
    25- 50  1.108e-08   7.350e-09
    50-150  4.008e-08   2.438e-08
    15-150  5.572e-08   3.128e-08
    

    Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)

    Power-law model
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.04760     ( -0.280766   0.308181 )
    Norm@50keV  : 1.16157E-03    ( -0.000238275   0.000229553 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          42.49 using 59 PHA bins.
    # Reduced chi-squared =         0.7454 for     57 degrees of freedom 
    # Null hypothesis probability =   9.238890e-01
     
    Photon flux (15-150 keV)    in 112.9 sec: 0.178160 ( -0.0266891  0.02669 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.21301e-06 ( -2.23324e-07  2.30794e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.77910     ( -1.44024   0.33839 )
    Epeak [keV] : 33.4766      (   )
    Norm@50keV  : 1.67468E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          42.32 using 59 PHA bins.
    # Reduced chi-squared =         0.7556 for     56 degrees of freedom 
    # Null hypothesis probability =   9.118350e-01
     
    Photon flux (15-150 keV)    in 112.9 sec: 0.176543 ( -0.027498  0.02739 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.17801e-06 ( -2.58675e-07  2.57717e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.43985   ( 1.42608   1.42608 )
    beta        : -2.26674    ( 2.27468   0.488777 )
    Epeak [keV] : 32.8376      ( -32.8071 260.92 )
    Norm@50keV   : 2.80405E-03    ( -0.00291346   516.405 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          42.13 using 59 PHA bins.
    # Reduced chi-squared =         0.7660 for     55 degrees of freedom 
    # Null hypothesis probability =   8.985505e-01
     
    Photon flux (15-150 keV)    in 112.9 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    

    S(25-50 keV) vs. S(50-100 keV) plot

    S(25-50 keV)  = 4.90e-07
    S(50-100 keV) = 4.50e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 131.520000040531 sec.
    Hardness ratio (energy fluence ratio) = 0.918367
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.891228
    Count Ratio (50-100 keV) / (15-25 keV) = 0.380739
    

    Mask shadow pattern

    IMX = -3.560606092275742E-01, IMY = -5.474196051367878E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 64.000000
    

    Spacecraft aspect plot

    Bright source in the pre-burst/pre-slew/post-slew images

    Pre-burst image of 15-350 keV band

    Time interval of the image:
    -239.000000 -39.960000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     20.3534  52.3327    2.7  39.6   81.4   3.5403   4.2 ------	UNKNOWN                       
    266.6368  56.7551    2.4  41.8  177.7   1.4041   4.8 ------	UNKNOWN                       
    169.3313  77.8035    2.8  10.0 -128.7   0.7058   4.2 ------	UNKNOWN                       
    241.6932  64.9784    2.9  31.5 -165.0   0.8258   4.0 ------	UNKNOWN                       
    228.2063  38.8312    4.1  55.3 -144.7   2.9854   2.8 ------	UNKNOWN                       
    217.4469  41.6187    2.5  50.9 -135.4   4.2834   4.6 ------	UNKNOWN                       
    

    Pre-slew background subtracted image of 15-350 keV band

    Time interval of the image:
    -39.960000 72.900610
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    336.9588  64.6476    1.1  33.1  123.0   2.8541  10.3 ------	UNKNOWN                       
    123.7495  44.3292    1.9  36.2  -35.4   1.0883   6.0 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    127.700600 963.080000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    299.6277  35.1890    2.6  36.9  179.7   3.3893   4.4    2.0	Cyg X-1                       
    308.0605  40.9618    1.2  28.9  173.2   6.0445   9.9    2.3	Cyg X-3                       
    325.9415  38.2979   45.1  27.2  143.4  -0.1781  -0.3   10.9	Cyg X-2                       
     35.6581  58.6416    2.8  27.5   19.1   2.3197   4.1 ------	UNKNOWN                       
     73.1676  57.6941    5.1  42.4   -3.6   1.8915   2.3 ------	UNKNOWN                       
     98.3938  49.1681    2.4  57.5  -14.2  12.3488   4.7 ------	UNKNOWN                       
    268.5579  36.8967    3.1  48.0 -146.4   5.1624   3.7 ------	UNKNOWN                       
    111.6378  51.2168    3.7  58.9  -24.3  13.7084   3.1 ------	UNKNOWN                       
    262.8606  31.1439    5.0  55.3 -145.1   8.2597   2.3 ------	UNKNOWN                       
    250.1128  49.4503    4.1  45.3 -121.4   6.8309   2.8 ------	UNKNOWN                       
    
    Plot creation:
    Sun Nov  1 14:37:12 EST 2015