batgrbproduct analysis for trigger=737438

batgrbproduct Analysis for Trigger=737438

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Apr 12 15:13:20 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger737438
======================================================================

  Trigger: 00737438      Segment: 000

  BAT Trigger Time: 508270294.912   [s; MET]
      Trigger Stop: 508270295.424   [s; MET]
               UTC: 2017-02-08T18:11:16.327540    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 166.562700100311   Dec: -46.779089937229  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.1
     Image Trigger?:     NO
     Rate S/N Ratio:     30  [ if not an image trigger ]
     Image S/N Ratio:    10.1

  Flight Position:   [ source = BAT ]
    RA: 166.562700100311   Dec: -46.779089937229  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 166.543749895983   Dec: -46.7859274228712  [deg; J2000]  
        { 11h 06m 10.5s , -46d 47' 09.3" }
         +/- 1.38506592102022 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.598865017180604 [arcmin] (formal 1-sigma fit error)
    SNR: 19.0993130012904
 
  Angular difference between Flight and Ground position is 0.880062 arcmin
 
  Partial Coding Fraction: 0.1796875    [ including projection effects ]

  Duration
     T90: 7.44799995422363 +/- 0.543293661245789
        Measured from: 0.0879999995231628
                   to: 7.5359999537468     [s; relative to TRIGTIME]
     T50: 4.97199994325638 +/- 1.07837842869592
        Measured from: 0.628000020980835
                   to: 5.59999996423721     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0360000133514404     
                   to: 0.96399998664856     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0360000133514404     
                   to: 8.06000000238419     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.251649   0.605438   0.732522   0.289853
           0.047018   0.051834   0.047469   0.038076 [error]
 Peak      0.083729   0.180017   0.273886   0.096177
           0.017868   0.021800   0.022094   0.016871 [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 1.20e-07 2.93e-07 5.70e-07 2.74e-06 1.54e-06 3.72e-06   erg/cm2
              Error 2.10e-08 3.13e-08 4.37e-08 4.75e-07 1.17e-07 4.85e-07   erg/cm2
Peak flux Power-law 2.45e-04 3.03e-03 3.15e-02 2.98e+00 1.42e-01 3.00e+00   ph/cm2/s
              Error 1.06e-04 1.15e-03 1.12e-02 7.03e-01 4.67e-02 7.22e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.08e-07 2.97e-07 5.97e-07 1.87e-06 1.53e-06 2.87e-06   erg/cm2
              Error 2.62e-08 3.32e-08 5.94e-08 7.98e-07 1.18e-07 9.00e-07   erg/cm2
Peak flux Cutoff-PL 9.24e-01 1.66e+00 1.81e+00 1.56e+00 5.24e+00 5.97e+00   ph/cm2/s
              Error 3.49e-01 2.52e-01 2.46e-01 8.46e-01 6.18e-01 1.07e+00   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    1.039    0.133    -      -           1.78e-02 1.48e-03   86.960 57
CPL   0.687    0.500     233.0    0.0      2.49e-02 1.28e-02   85.680 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.028    0.170    -      -           4.69e-02 5.04e-03   71.660 57
CPL   0.149    0.856     133.5  226.0      1.06e-01 9.41e-02   67.830 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: 7.616000 sec.
T50 in the 50-300 keV band: 5.312000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    8.096   -0.036    8.060
T90     7.448    0.088    7.536
T50     4.972    0.628    5.600
Peak    1.000   -0.036    0.964

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
  166.5437   -46.7859   0.0101    53.2460   -20.0970         2.0011949     19.099 TRIG_00737438                 
 
Foreground time interval of the image:
 -0.036   8.060 (delta_t =   8.096 [sec])
Background time interval of the image:
-239.912  -0.036 (delta_t = 239.876 [sec])

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
5) Time of each bin is in the middle of the bin.

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)

Spectral Evolution

Spectra

Notes:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from   -0.036 sec. to    8.060 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.03939     ( -0.135775   0.130677 )
Norm@50keV  : 1.78433E-02    ( -0.0014898   0.00147122 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          86.96 using 59 PHA bins.
# Reduced chi-squared =          1.526 for     57 degrees of freedom 
# Null hypothesis probability =   6.459716e-03
 
Photon flux (15-150 keV)    in 8.096 sec: 2.05926 ( -0.17903  0.18036 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.54103e-06 ( -1.16531e-07  1.16693e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.036 sec. to    8.060 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.686979     ( -0.591923   0.408507 )
Epeak [keV] : 233.046      ( -233.053 -233.053 )
Norm@50keV  : 2.48953E-02    ( -0.00800007   0.017638 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.68 using 59 PHA bins.
# Reduced chi-squared =          1.530 for     56 degrees of freedom 
# Null hypothesis probability =   6.518602e-03
 
Photon flux (15-150 keV)    in 8.096 sec: 2.02963 ( -0.18316  0.18509 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.5332e-06 ( -1.18191e-07  1.17961e-07 ) ergs/cm2

Band function

Time interval is from   -0.036 sec. to    8.060 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]    : 23.6773  (-2.30422  2.73111)
R^2/D10^2   : 5.83094E-02  (-0.0176006   0.0237377)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         110.52 using 59 PHA bins.
# Reduced chi-squared =         1.9389 for     57 degrees of freedom 
# Null hypothesis probability =   2.780222e-05
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.728e-08   7.550e-09
25- 50  2.607e-07   3.376e-08
50-150  1.090e-06   1.263e-07
15-150  1.398e-06   1.267e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 9.19863       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         134.04 using 59 PHA bins.
# Reduced chi-squared =         2.3516 for     57 degrees of freedom 
# Null hypothesis probability =   3.780026e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.854e-07   1.814e-08
25- 50  3.567e-07   4.230e-08
50-150  7.824e-07   2.615e-07
15-150  1.325e-06   2.222e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 12.7305        (-2.90442      3.20641)
R1^2/D10^2  : 0.285328        (-0.131558      0.283899)
kT2 [keV]   : 59.0362        (-24.9593      -59.0358)
R2^2/D10^2  : 2.93775E-03    (-0.00209112   0.00926674)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.36 using 59 PHA bins.
# Reduced chi-squared =          1.479 for     55 degrees of freedom 
# Null hypothesis probability =   1.197017e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.733e-08   3.610e-08
25- 50  3.266e-07   1.250e-07
50-150  1.111e-06   5.375e-07
15-150  1.525e-06   6.368e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.036 sec. to    0.964 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.02797     ( -0.172336   0.167279 )
Norm@50keV  : 4.68991E-02    ( -0.00506723   0.00502054 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.66 using 59 PHA bins.
# Reduced chi-squared =          1.257 for     57 degrees of freedom 
# Null hypothesis probability =   9.148741e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.141958 ( -0.001896  0.091529 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.02262e-07 ( -5.25029e-08  5.25425e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.036 sec. to    0.964 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.149450     ( -0.942   0.770484 )
Epeak [keV] : 133.467      ( -38.5922 413.316 )
Norm@50keV  : 0.105972    ( -0.0534449   0.134718 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.83 using 59 PHA bins.
# Reduced chi-squared =          1.211 for     56 degrees of freedom 
# Null hypothesis probability =   1.335846e-01
 
Photon flux (15-150 keV)    in 1 sec: 5.23877 ( -0.61528  0.62044 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.98712e-07 ( -5.40603e-08  5.36833e-08 ) ergs/cm2

Band function

Time interval is from   -0.036 sec. to    0.964 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]    : 23.4630  (-2.67319  3.21439)
R^2/D10^2   : 0.164457  (-0.0561124   0.0796353)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          74.18 using 59 PHA bins.
# Reduced chi-squared =          1.301 for     57 degrees of freedom 
# Null hypothesis probability =   6.274213e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.625e-08   3.310e-09
25- 50  8.913e-08   1.449e-08
50-150  3.662e-07   5.240e-08
15-150  4.716e-07   6.425e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-17.9816      -200)
Norm        : 23.1426       (-2.4906     2.4906)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          98.79 using 59 PHA bins.
# Reduced chi-squared =          1.733 for     57 degrees of freedom 
# Null hypothesis probability =   4.991464e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.765e-08   1.538e-08
25- 50  1.109e-07   5.495e-08
50-150  2.432e-07   1.325e-07
15-150  4.118e-07   2.255e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.16354        (-1.67474      10.1382)
R1^2/D10^2  : 1049.96        (-1049.69      -1052.54)
kT2 [keV]   : 24.5640        (-2.97601      -24.5634)
R2^2/D10^2  : 0.139274    (-0.137536   0.0734655)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.79 using 59 PHA bins.
# Reduced chi-squared =          1.233 for     55 degrees of freedom 
# Null hypothesis probability =   1.153258e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.356e-08   1.325e-08
25- 50  8.358e-08   1.494e-08
50-150  3.715e-07   5.970e-08
15-150  4.886e-07   7.140e-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: 1.03939     ( -0.135775   0.130677 )
Norm@50keV  : 1.78433E-02    ( -0.0014898   0.00147122 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          86.96 using 59 PHA bins.
# Reduced chi-squared =          1.526 for     57 degrees of freedom 
# Null hypothesis probability =   6.459716e-03
 
Photon flux (15-150 keV)    in 8.096 sec: 2.05915 ( -0.178863  0.180427 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.54088e-06 ( -1.1665e-07  1.16665e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.686983     ( -0.591922   0.408508 )
Epeak [keV] : 233.046      ( -233.053 -233.053 )
Norm@50keV  : 2.48953E-02    ( -0.00800007   0.017638 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.68 using 59 PHA bins.
# Reduced chi-squared =          1.530 for     56 degrees of freedom 
# Null hypothesis probability =   6.518602e-03
 
Photon flux (15-150 keV)    in 8.096 sec: 2.02955 ( -0.18311  0.18504 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.53394e-06 ( -1.18428e-07  1.18007e-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)  = 2.93e-07
S(50-100 keV) = 5.70e-07

T90 vs. Hardness ratio plot

T90                                   = 7.44799995422363 sec.
Hardness ratio (energy fluence ratio) = 1.94539

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 2.40588
Count Ratio (50-100 keV) / (15-25 keV) = 2.91089

Mask shadow pattern

IMX = 1.257439648129232E+00, IMY = 4.600820549632218E-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:
-239.912000 -0.036000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5138 -40.5555    1.3  48.1    9.2   3.6547   8.7    0.7	Vela X-1                      
148.9789 -50.8842    2.5  55.9   -5.4   3.2205   4.7 ------	UNKNOWN                       
163.6309 -13.7957    2.2  21.8  -38.5   1.0304   5.3 ------	UNKNOWN                       
191.0589   2.3858    4.7  38.6  -95.7   1.7359   2.5 ------	UNKNOWN                       
197.6880  25.9723    3.3  48.0 -129.0   3.3692   3.5 ------	UNKNOWN

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

Time interval of the image:
-0.036000 8.060000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.6516 -40.6129   13.3  48.1    9.1   0.0674   0.9    6.6	Vela X-1                      
112.4244  11.4829    2.6  40.1   93.8   0.6498   4.5 ------	UNKNOWN                       
122.7581  49.2588    1.9  50.9  147.3   0.9399   6.2 ------	UNKNOWN                       
166.5437 -46.7859    0.6  53.2  -20.1   2.0007  19.1 ------	UNKNOWN                       
180.0453   7.8376    2.7  27.5 -105.5   0.2094   4.2 ------	UNKNOWN                       
185.3580  20.6360    3.1  35.6 -127.2   0.2114   3.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
103.388580 962.135100
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5212 -40.5601    0.6  23.1   30.1  12.8837  20.7    0.5	Vela X-1                      
170.3839 -60.6347    2.5  14.1  -71.9   3.0103   4.6    2.1	Cen X-3                       
186.6444 -62.8012    2.5  19.6  -92.0   3.0997   4.7    1.9	GX 301-2                      
134.8277 -14.9467    2.8  41.3   65.6   9.5592   4.2 ------	UNKNOWN                       
145.7428 -32.7130    2.9  21.2   60.0   2.6537   4.0 ------	UNKNOWN                       
 83.4537 -41.7329    4.0  56.9   -1.9   7.6503   2.9 ------	UNKNOWN                       
 91.9563 -46.4346    2.9  49.2   -2.8   4.6846   4.0 ------	UNKNOWN                       
226.0253 -38.1774    3.8  43.6 -143.0   3.9950   3.1 ------	UNKNOWN                       
 55.4516 -81.1270    3.1  47.0  -52.8  12.8836   3.7 ------	UNKNOWN                       
237.9731 -50.8593    3.1  45.4 -121.4  10.3165   3.8 ------	UNKNOWN                       
237.8291 -44.8617    3.8  48.0 -128.8  10.1519   3.1 ------	UNKNOWN

Plot creation:
Thu Apr 13 22:06:22 EDT 2017