batgrbproduct Analysis for Trigger=579683

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sat Jan 11 22:05:01 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger579683
======================================================================

  Trigger: 00579683      Segment: 000

  BAT Trigger Time: 407343995.904   [s; MET]
      Trigger Stop: 407343996.416   [s; MET]
               UTC: 2013-11-28T15:06:24.575040    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 355.323120755133   Dec: 31.2793393516818  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.17
     Image Trigger?:     NO
     Rate S/N Ratio:     23.3023603954621  [ if not an image trigger ]
     Image S/N Ratio:    11.17

  Flight Position:   [ source = BAT ]
    RA: 355.323120755133   Dec: 31.2793393516818  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 355.305331633583   Dec: 31.2928211504896  [deg; J2000]  
        { 23h 41m 13.3s , +31d 17' 34.2" }
         +/- 1.57764728989873 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.617945374071145 [arcmin] (formal 1-sigma fit error)
    SNR: 15.8579510072656
 
  Angular difference between Flight and Ground position is 1.219151 arcmin
 
  Partial Coding Fraction: 0.4101562    [ including projection effects ]

  Duration
     T90: 3 +/- 1.4142135623731
        Measured from: -0.903999984264374
                   to: 2.09600001573563     [s; relative to TRIGTIME]
     T50: 1 +/- 1
        Measured from: 0.0960000157356262
                   to: 1.09600001573563     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0960000157356262     
                   to: 1.09600001573563     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.903999984264374     
                   to: 2.09600001573563     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.184048   0.190619   0.142317   0.016720
           0.017102   0.017947   0.015545   0.012191 [error]
 Peak      0.099286   0.116326   0.087213   0.003991
           0.010734   0.011518   0.009987   0.007193 [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 5.90e-08 8.97e-08 1.02e-07 2.23e-07 3.17e-07 4.74e-07   erg/cm2
              Error 8.59e-09 8.65e-09 1.50e-08 6.57e-08 3.52e-08 8.05e-08   erg/cm2
Peak flux Power-law 1.07e+00 9.05e-01 5.20e-01 4.44e-01 2.69e+00 2.94e+00   ph/cm2/s
              Error 1.67e-01 9.70e-02 7.70e-02 1.23e-01 2.89e-01 3.14e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.33e-08 9.70e-08 1.06e-07 8.81e-08 3.04e-07 3.44e-07   erg/cm2
              Error 1.02e-08 1.11e-08 1.67e-08 8.55e-08 3.69e-08 9.26e-08   erg/cm2
Peak flux Cutoff-PL 8.22e-01 1.07e+00 5.90e-01 1.19e-01 2.58e+00 2.60e+00   ph/cm2/s
              Error 2.12e-01 1.29e-01 9.69e-02 8.49e-02 2.96e-01 3.10e-01   ph/cm2/s
 
Fluence        Band 5.27e-08 9.67e-08 1.06e-07 8.69e-08 3.04e-07 3.43e-07   erg/cm2
              Error -------- 1.08e-08 -------- -------- 3.65e-08 8.25e-08   erg/cm2
Peak flux      Band 8.27e-01 1.06e+00 5.89e-01 1.21e-01 2.58e+00 2.60e+00   ph/cm2/s
              Error 2.00e-01 -------- 9.18e-02 -------- 2.89e-01 --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.811    0.170    -      -           1.15e-02 1.25e-03   64.340 57
CPL   1.112    0.713      60.9   75.1      2.67e-02 2.67e-02   60.990 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.801    0.171    -      -           1.95e-02 2.30e-03   63.450 57
CPL   0.146    0.964      54.4    9.5      1.41e-01 2.13e-01   51.080 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: 1.984000 sec.
T50 in the 50-300 keV band: 0.896000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    3.000   -0.904    2.096
T90     3.000   -0.904    2.096
T50     1.000    0.096    1.096
Peak    1.000    0.096    1.096
  • Click here for the BAT GCN circular template
  • Special notes of this burst

    Image

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

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
      355.3053    31.2928   0.0121    33.8017  -117.8780         0.5356779     15.858 TRIG_00579683                 
     
    Foreground time interval of the image:
     -0.904   2.096 (delta_t =   3.000 [sec])
    Background time interval of the image:
    -239.904  -0.904 (delta_t = 239.000 [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 0.512000
    

    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 0.512000
    

    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 0.512000
    

    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)

    The mask-weighted light curves based on cleaned DPHs

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from   -0.904 sec. to    2.096 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.81095     ( -0.166826   0.173656 )
    Norm@50keV  : 1.14938E-02    ( -0.00125974   0.00123933 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.34 using 59 PHA bins.
    # Reduced chi-squared =          1.129 for     57 degrees of freedom 
    # Null hypothesis probability =   2.351738e-01
     
    Photon flux (15-150 keV)    in 3 sec: 1.59060 ( -0.154986  0.155111 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.17325e-07 ( -3.50472e-08  3.54402e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.904 sec. to    2.096 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.11179     ( -0.768158   0.657441 )
    Epeak [keV] : 60.9053      ( -14.3354 135.934 )
    Norm@50keV  : 2.67340E-02    ( -0.0143889   0.0389246 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.99 using 59 PHA bins.
    # Reduced chi-squared =          1.089 for     56 degrees of freedom 
    # Null hypothesis probability =   3.011038e-01
     
    Photon flux (15-150 keV)    in 3 sec: 1.54786 ( -0.16089  0.16021 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.04317e-07 ( -3.65082e-08  3.7353e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.904 sec. to    2.096 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.11324   ( -0.731219   0.696961 )
    beta        : -10.0000    ( 10   3.55271e-15 )
    Epeak [keV] : 61.0095      ( -14.4458 107.678 )
    Norm@50keV   : 2.66612E-02    ( -0.0143185   0.0391211 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.00 using 59 PHA bins.
    # Reduced chi-squared =          1.109 for     55 degrees of freedom 
    # Null hypothesis probability =   2.692255e-01
     
    Photon flux (15-150 keV)    in 3 sec: 1.56805 ( 5.43195  -0.17934 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.03777e-07 ( -3.03756e-07  -3.5739e-08 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 13.2399  (-1.43398  1.58436)
    R^2/D10^2   : 0.270328  (-0.0918985   0.140661)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          81.60 using 59 PHA bins.
    # Reduced chi-squared =          1.431 for     57 degrees of freedom 
    # Null hypothesis probability =   1.798756e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.014e-08   5.394e-09
    25- 50  1.058e-07   1.266e-08
    50-150  1.185e-07   2.556e-08
    15-150  2.545e-07   3.171e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 108.028       (-32.7642      49.636)
    Norm        : 6.80904       (-0.827803     1.1076)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.45 using 59 PHA bins.
    # Reduced chi-squared =          1.078 for     57 degrees of freedom 
    # Null hypothesis probability =   3.198434e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.336e-08   7.635e-09
    25- 50  9.367e-08   1.102e-08
    50-150  1.584e-07   6.631e-08
    15-150  3.054e-07   6.802e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 3.83013        (-0.937084      1.20405)
    R1^2/D10^2  : 18.7231        (-13.3759      61.3006)
    kT2 [keV]   : 16.8004        (-2.20567      2.81302)
    R2^2/D10^2  : 9.89405E-02    (-0.0448667   0.0712766)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.02 using 59 PHA bins.
    # Reduced chi-squared =         0.9822 for     55 degrees of freedom 
    # Null hypothesis probability =   5.119877e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.835e-08   2.669e-08
    25- 50  8.815e-08   2.356e-08
    50-150  1.507e-07   4.623e-08
    15-150  2.972e-07   7.610e-08
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.096 sec. to    1.096 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.80053     ( -0.166993   0.174542 )
    Norm@50keV  : 1.95373E-02    ( -0.00231169   0.00228194 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          63.45 using 59 PHA bins.
    # Reduced chi-squared =          1.113 for     57 degrees of freedom 
    # Null hypothesis probability =   2.597171e-01
     
    Photon flux (15-150 keV)    in 1 sec: 2.69275 ( -0.289136  0.289345 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.79858e-07 ( -2.15e-08  2.16928e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.096 sec. to    1.096 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.146469     ( -1.06384   0.86431 )
    Epeak [keV] : 54.3873      ( -7.38308 11.6237 )
    Norm@50keV  : 0.140946    ( -0.0894009   0.335658 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          51.08 using 59 PHA bins.
    # Reduced chi-squared =         0.9122 for     56 degrees of freedom 
    # Null hypothesis probability =   6.610477e-01
     
    Photon flux (15-150 keV)    in 1 sec: 2.57709 ( -0.29364  0.29759 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.69483e-07 ( -2.1117e-08  2.1845e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.096 sec. to    1.096 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.147376   ( -0.645361   1.38365 )
    beta        : -10.0000    ( 10   3.55271e-15 )
    Epeak [keV] : 54.3703      ( -7.37547 11.6223 )
    Norm@50keV   : 0.140855    ( -0.0893211   0.336176 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          51.09 using 59 PHA bins.
    # Reduced chi-squared =         0.9288 for     55 degrees of freedom 
    # Null hypothesis probability =   6.249542e-01
     
    Photon flux (15-150 keV)    in 1 sec: 2.58035 ( 4.41965  -0.29619 ) 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]    : 13.3640  (-1.29454  1.41279)
    R^2/D10^2   : 0.478237  (-0.149627   0.216236)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.26 using 59 PHA bins.
    # Reduced chi-squared =         0.9870 for     57 degrees of freedom 
    # Null hypothesis probability =   5.028786e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.810e-08   3.210e-09
    25- 50  6.420e-08   8.400e-09
    50-150  7.364e-08   1.551e-08
    15-150  1.559e-07   1.860e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 98.7685       (-27.127      47.0079)
    Norm        : 12.2016       (-1.62748     1.86469)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.24 using 59 PHA bins.
    # Reduced chi-squared =         0.9868 for     57 degrees of freedom 
    # Null hypothesis probability =   5.033792e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.189e-08   5.100e-09
    25- 50  5.501e-08   6.990e-09
    50-150  8.851e-08   3.375e-08
    15-150  1.754e-07   3.815e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 3.19341        (-1.1291      1.55621)
    R1^2/D10^2  : 56.2707        (-49.3565      852.721)
    kT2 [keV]   : 14.9413        (-1.6601      2.02149)
    R2^2/D10^2  : 0.291748    (-0.117284   0.161056)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.19 using 59 PHA bins.
    # Reduced chi-squared =         0.8034 for     55 degrees of freedom 
    # Null hypothesis probability =   8.514409e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.899e-08   1.120e-08
    25- 50  5.679e-08   1.294e-08
    50-150  8.194e-08   2.108e-08
    15-150  1.677e-07   3.300e-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: 1.81095     ( -0.166826   0.173656 )
    Norm@50keV  : 1.14938E-02    ( -0.00125974   0.00123933 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.34 using 59 PHA bins.
    # Reduced chi-squared =          1.129 for     57 degrees of freedom 
    # Null hypothesis probability =   2.351738e-01
     
    Photon flux (15-150 keV)    in 3 sec: 1.59060 ( -0.154986  0.155111 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.17325e-07 ( -3.50472e-08  3.54402e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.11179     ( -0.768158   0.657441 )
    Epeak [keV] : 60.9053      ( -14.3354 135.934 )
    Norm@50keV  : 2.67340E-02    ( -0.0143889   0.0389246 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.99 using 59 PHA bins.
    # Reduced chi-squared =          1.089 for     56 degrees of freedom 
    # Null hypothesis probability =   3.011038e-01
     
    Photon flux (15-150 keV)    in 3 sec: 1.54786 ( -0.16089  0.16021 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.04317e-07 ( -3.65082e-08  3.7353e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.11324   ( -0.731229   0.696961 )
    beta        : -10.0000    ( 10   1.77636e-15 )
    Epeak [keV] : 61.0095      ( -14.4458 107.678 )
    Norm@50keV   : 2.66612E-02    ( -0.0143185   0.0391211 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.00 using 59 PHA bins.
    # Reduced chi-squared =          1.109 for     55 degrees of freedom 
    # Null hypothesis probability =   2.692255e-01
     
    Photon flux (15-150 keV)    in 3 sec: 1.56805 ( 5.43195  -0.17934 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.03777e-07 ( -3.03756e-07  -3.5739e-08 ) ergs/cm2
     
    

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

    S(25-50 keV)  = 8.97e-08
    S(50-100 keV) = 1.02e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 3 sec.
    Hardness ratio (energy fluence ratio) = 1.13712
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.0357
    Count Ratio (50-100 keV) / (15-25 keV) = 0.77326
    

    Mask shadow pattern

    IMX = -3.130452807927193E-01, IMY = 5.917884229788045E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    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:
    -239.904000 -0.904000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     20.5598  -2.4743    2.8  38.4  168.7   1.1820   4.0 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -0.904000 2.096000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     51.5257  14.8077    2.1  23.5  102.1   0.1342   5.4 ------	UNKNOWN                       
     50.0379  20.4834    2.4  18.2   95.2   0.1017   4.8 ------	UNKNOWN                       
    355.3053  31.2928    0.7  33.8 -117.9   0.5357  15.9 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    70.596590 962.130200
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    308.1376  40.9552    1.1  38.8  -52.7  10.2615  10.8    1.3	Cyg X-3                       
    326.1448  38.4101   12.1  24.9  -55.9   0.5748   1.0    5.5	Cyg X-2                       
     33.3947  64.8508    3.3  40.9   33.0   3.2974   3.5 ------	UNKNOWN                       
    317.8438  82.2054    2.7  52.7    3.4   5.7863   4.3 ------	UNKNOWN                       
    345.0193  52.8183    3.0  22.8   -6.8   1.8147   3.8 ------	UNKNOWN                       
    336.4192  64.2598    3.5  35.0   -4.8   2.1399   3.3 ------	UNKNOWN                       
    351.0033 -27.6010    3.0  59.0 -166.1  12.8080   3.8 ------	UNKNOWN                       
    315.2156  12.9315    4.0  41.1  -97.9   8.2562   2.9 ------	UNKNOWN                       
    321.2466   1.0530    3.6  44.2 -117.1   6.9745   3.2 ------	UNKNOWN                       
    
    Plot creation:
    Sat May 30 15:01:34 EDT 2015