batgrbproduct Analysis for Trigger=720697

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Dec  4 15:38:07 EST 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger720697
======================================================================

  Trigger: 00720697      Segment: 000

  BAT Trigger Time: 500014399.488   [s; MET]
      Trigger Stop: 500014400.512   [s; MET]
               UTC: 2016-11-05T04:53:02.375560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 120.162953074002   Dec: -44.7796477196195  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.86
     Image Trigger?:     NO
     Rate S/N Ratio:     17.058722109232  [ if not an image trigger ]
     Image S/N Ratio:    10.86

  Flight Position:   [ source = BAT ]
    RA: 120.162953074002   Dec: -44.7796477196195  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 120.190331587209   Dec: -44.7647100034937  [deg; J2000]  
        { 08h 00m 45.7s , -44d 45' 53.0" }
         +/- 1.09878569975036 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.481269284568821 [arcmin] (formal 1-sigma fit error)
    SNR: 26.5871165325324
 
  Angular difference between Flight and Ground position is 1.470805 arcmin
 
  Partial Coding Fraction: 0.859375    [ including projection effects ]

  Duration
     T90: 177.695999979973 +/- 25.073484405906
        Measured from: -57.555999994278
                   to: 120.139999985695     [s; relative to TRIGTIME]
     T50: 62.8199999928474 +/- 2.38097120413656
        Measured from: 1.20800000429153
                   to: 64.027999997139     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.632000029087067     
                   to: 1.63200002908707     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -87.039999961853     
                   to: 161.076000034809     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.177770   3.652139   2.902598   0.709829
           0.095559   0.098600   0.085292   0.071391 [error]
 Peak      0.019616   0.071887   0.068376   0.035142
           0.006566   0.007143   0.006683   0.005194 [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 7.00e-07 1.41e-06 2.21e-06 7.67e-06 6.15e-06 1.20e-05   erg/cm2
              Error 4.45e-08 5.25e-08 8.47e-08 6.72e-07 2.11e-07 7.17e-07   erg/cm2
Peak flux Power-law 2.54e-01 4.01e-01 4.77e-01 1.10e+00 1.45e+00 2.24e+00   ph/cm2/s
              Error 6.34e-02 6.15e-02 5.03e-02 2.56e-01 1.61e-01 2.68e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.55e-07 1.44e-06 2.27e-06 5.09e-06 6.03e-06 9.45e-06   erg/cm2
              Error 5.52e-08 5.85e-08 9.52e-08 1.60e-06 2.34e-07 1.60e-06   erg/cm2
Peak flux Cutoff-PL 2.23e-01 4.05e-01 5.03e-01 7.68e-01 1.43e+00 1.90e+00   ph/cm2/s
              Error 7.87e-02 6.53e-02 6.71e-02 3.92e-01 1.64e-01 4.34e-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    1.349    0.058    -      -           2.54e-03 8.10e-05   60.070 57
CPL   1.052    0.237     172.3  207.8      3.50e-03 8.87e-04   55.180 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.749    0.190    -      -           1.26e-02 1.45e-03   62.000 57
CPL   0.342    0.681     253.4    0.0      1.85e-02 1.39e-02   61.090 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: 142.336000 sec.
T50 in the 50-300 keV band: 54.144000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  248.116  -87.040  161.076
T90   177.696  -57.556  120.140
T50    62.820    1.208   64.028
Peak    1.000    0.632    1.632
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

    Image

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

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
      120.1903   -44.7647   0.0073    24.4252    20.8951         3.9543504     26.587 TRIG_00720697                 
     
    Foreground time interval of the image:
    -87.040  11.413 (delta_t =  98.453 [sec])
    Background time interval of the image:
    -495.087 -476.441 (delta_t =  18.647 [sec])
    -239.488 -87.040 (delta_t = 152.448 [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 1.024000
    

    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 1.024000
    

    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 1.024000
    

    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  -87.040 sec. to  161.076 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.34878     ( -0.0585581   0.0583366 )
    Norm@50keV  : 2.54032E-03    ( -8.10466e-05   8.10457e-05 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.07 using 59 PHA bins.
    # Reduced chi-squared =          1.054 for     57 degrees of freedom 
    # Null hypothesis probability =   3.652019e-01
     
    Photon flux (15-150 keV)    in 248.1 sec: 0.305962 ( -0.010476  0.0105 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.15797e-06 ( -2.10845e-07  2.11261e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -87.040 sec. to  161.076 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.05194     ( -0.243665   0.230819 )
    Epeak [keV] : 172.337      ( -54.0354 361.58 )
    Norm@50keV  : 3.49868E-03    ( -0.000752747   0.00102037 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.18 using 59 PHA bins.
    # Reduced chi-squared =         0.9854 for     56 degrees of freedom 
    # Null hypothesis probability =   5.057373e-01
     
    Photon flux (15-150 keV)    in 248.1 sec: 0.300546 ( -0.011227  0.011248 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.03054e-06 ( -2.3443e-07  2.33386e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  -87.040 sec. to  161.076 sec.
     
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       :    (     )
    beta        :     (     )
    Epeak [keV] :       (   )
    Norm@50keV   :     (     )
    ------------------------------------------------------------
     
    Photon flux (15-150 keV)    in  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]    : 17.4297  (  )
    R^2/D10^2   : 2.09316E-02  (   )
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         230.71 using 59 PHA bins.
    # Reduced chi-squared =         4.0476 for     57 degrees of freedom 
    # Null hypothesis probability =   9.247257e-23
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.190e-07   2.146e-08
    25- 50  1.440e-06   6.699e-08
    50-150  3.146e-06   1.749e-07
    15-150  4.905e-06   2.022e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (-5.88065      -200)
    Norm        : 1.28303       (-0.0411884     0.0411884)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          92.98 using 59 PHA bins.
    # Reduced chi-squared =          1.631 for     57 degrees of freedom 
    # Null hypothesis probability =   1.843785e-03
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.929e-07   2.754e-08
    25- 50  1.525e-06   5.421e-08
    50-150  3.345e-06   1.116e-07
    15-150  5.663e-06   1.873e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 9.00851        (-0.962509      1.02785)
    R1^2/D10^2  : 0.129380        (-0.0352248      0.0528094)
    kT2 [keV]   : 34.6096        (-5.02571      8.02219)
    R2^2/D10^2  : 1.63087E-03    (-0.00078029   0.00114579)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          48.01 using 59 PHA bins.
    # Reduced chi-squared =         0.8729 for     55 degrees of freedom 
    # Null hypothesis probability =   7.365989e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.766e-07   5.930e-08
    25- 50  1.530e-06   1.301e-07
    50-150  3.967e-06   6.674e-07
    15-150  6.074e-06   6.934e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.632 sec. to    1.632 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.748826     ( -0.195106   0.184727 )
    Norm@50keV  : 1.26117E-02    ( -0.00146579   0.00144 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.00 using 59 PHA bins.
    # Reduced chi-squared =          1.088 for     57 degrees of freedom 
    # Null hypothesis probability =   3.023858e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.45293 ( -0.16059  0.16134 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.50664e-07 ( -1.63999e-08  1.64335e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.632 sec. to    1.632 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.341657     ( -0.847454   0.515481 )
    Epeak [keV] : 253.383      ( -253.387 -253.387 )
    Norm@50keV  : 1.85105E-02    ( -0.00695557   0.0208913 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.09 using 59 PHA bins.
    # Reduced chi-squared =          1.091 for     56 degrees of freedom 
    # Null hypothesis probability =   2.982625e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.43317 ( -0.16376  0.16477 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.48977e-07 ( -1.71179e-08  1.689e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.632 sec. to    1.632 sec.
     
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       :    (     )
    beta        :     (     )
    Epeak [keV] :       (   )
    Norm@50keV   :     (     )
    ------------------------------------------------------------
     
    Photon flux (15-150 keV)    in  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]    : 27.0103  (-3.9581  5.10084)
    R^2/D10^2   : 2.97892E-02  (-0.0117974   0.0181817)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          70.20 using 59 PHA bins.
    # Reduced chi-squared =          1.232 for     57 degrees of freedom 
    # Null hypothesis probability =   1.125409e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.618e-09   8.200e-10
    25- 50  2.132e-08   4.085e-09
    50-150  1.136e-07   2.081e-08
    15-150  1.385e-07   1.920e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (-16.6216      -200)
    Norm        : 5.81671       (-0.67559     0.67559)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         111.97 using 59 PHA bins.
    # Reduced chi-squared =         1.9645 for     57 degrees of freedom 
    # Null hypothesis probability =   1.902765e-05
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.448e-08   8.030e-09
    25- 50  2.785e-08   1.529e-08
    50-150  6.107e-08   3.368e-08
    15-150  1.034e-07   5.675e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 13.3061        (-4.42568      5.86327)
    R1^2/D10^2  : 0.147387        (-0.0878941      0.188187)
    kT2 [keV]   : 61.5557        (-30.7784      -65.1467)
    R2^2/D10^2  : 2.44150E-03    (-0.0017469   0.0104075)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.67 using 59 PHA bins.
    # Reduced chi-squared =          1.067 for     55 degrees of freedom 
    # Null hypothesis probability =   3.425705e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.386e-09   3.598e-09
    25- 50  2.597e-08   1.388e-08
    50-150  1.166e-07   5.980e-08
    15-150  1.490e-07   7.495e-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: 1.05751     ( -0.0862705   0.0848933 )
    Norm@50keV  : 2.64994E-03    ( -0.000128734   0.000128412 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          52.33 using 59 PHA bins.
    # Reduced chi-squared =         0.9182 for     57 degrees of freedom 
    # Null hypothesis probability =   6.504539e-01
     
    Photon flux (15-150 keV)    in 98.45 sec: 0.306233 ( -0.0154266  0.0154666 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.76577e-06 ( -1.39268e-07  1.39592e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.720972     ( -0.364731   0.331088 )
    Epeak [keV] : 218.862      ( -84.374 4365.31 )
    Norm@50keV  : 3.73318E-03    ( -0.000952384   0.00161108 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.41 using 59 PHA bins.
    # Reduced chi-squared =         0.8823 for     56 degrees of freedom 
    # Null hypothesis probability =   7.207640e-01
     
    Photon flux (15-150 keV)    in 98.45 sec: 0.301271 ( -0.016173  0.016196 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.7196e-06 ( -1.49486e-07  1.48423e-07 ) ergs/cm2
     
    
    Band function
     
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       :    (     )
    beta        :     (     )
    Epeak [keV] :       (   )
    Norm@50keV   :     (     )
    ------------------------------------------------------------
     
    Photon flux (15-150 keV)    in  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)  = 1.41e-06
    S(50-100 keV) = 2.21e-06
    

    T90 vs. Hardness ratio plot

    T90                                   = 177.695999979973 sec.
    Hardness ratio (energy fluence ratio) = 1.56738
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.67701
    Count Ratio (50-100 keV) / (15-25 keV) = 1.33283
    

    Mask shadow pattern

    IMX = 4.242829305703341E-01, IMY = -1.619759500832458E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    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:
    -495.087400 -476.440600
    -239.488000 -87.040000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.3829 -40.5993    3.8  15.7   -3.5   0.6241   3.1    7.2	Vela X-1                      
    170.0742 -60.7080   16.4  41.9  -33.6   0.2278   0.7    8.7	Cen X-3                       
    186.8501 -62.6298    4.8  49.5  -37.7   1.5266   2.4   10.0	GX 301-2                      
     97.0640 -26.2328    2.8  36.7   68.4   1.8760   4.1 ------	UNKNOWN                       
    162.1094  27.6478    2.1  57.6 -165.2   6.5017   5.5 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -87.040000 11.412630
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.4391 -40.3872   10.5  15.5   -3.6   0.1497   1.1   10.8	Vela X-1                      
    170.2997 -60.4776   14.0  41.9  -33.9  -0.2020  -0.8    8.7	Cen X-3                       
    186.4798 -62.9431    5.2  49.5  -37.3   0.9953   2.2   11.4	GX 301-2                      
     95.8445 -18.5986    2.6  39.4   80.1   2.3831   4.4 ------	UNKNOWN                       
    112.0972 -26.7455    1.7  23.3   69.4   1.1204   6.7 ------	UNKNOWN                       
    123.2993   1.4618    2.2  30.0  139.1   1.0397   5.3 ------	UNKNOWN                       
    120.1903 -44.7647    0.4  24.4   20.9   3.9520  26.5 ------	UNKNOWN                       
    165.0034  19.6561    2.5  51.8 -157.6   1.9891   4.6 ------	UNKNOWN                       
    165.6374   9.9596    2.2  44.2 -149.5   1.4479   5.3 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    57.012600 962.635700
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5535 -40.5848    3.2  12.0 -123.5   2.6033   3.6    2.1	Vela X-1                      
    170.5714 -60.6288   85.3  33.3  -61.9   0.1551   0.1    7.5	Cen X-3                       
    186.5647 -62.9727   48.5  40.8  -58.0   0.4631   0.2   12.4	GX 301-2                      
     62.8209 -38.0032    2.5  42.7   59.9  11.0826   4.5 ------	UNKNOWN                       
     91.5612 -18.3096    3.1  35.6  110.3   6.3556   3.7 ------	UNKNOWN                       
    120.4643   7.6046    3.9  52.4  162.0  10.1724   3.0 ------	UNKNOWN                       
     55.5227 -67.3936    2.6  39.9   14.4   4.4207   4.5 ------	UNKNOWN                       
    125.8275 -32.6628    3.2  12.9 -176.6   2.3361   3.6 ------	UNKNOWN                       
     84.3144 -76.5154    2.7  35.0   -4.6   3.9546   4.2 ------	UNKNOWN                       
    138.1898   8.4758    5.0  55.7 -176.7   7.8719   2.3 ------	UNKNOWN                       
    144.7974 -65.8846    3.3  25.0  -42.2   3.0653   3.6 ------	UNKNOWN                       
    156.5962 -68.1694    2.8  30.0  -44.6   3.6087   4.1 ------	UNKNOWN                       
    
    Plot creation:
    Sun Dec  4 17:21:39 EST 2016