batgrbproduct analysis for trigger=686818

batgrbproduct Analysis for Trigger=686818

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): Tue Jun 21 09:01:57 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger686818
======================================================================

  Trigger: 00686818      Segment: 000

  BAT Trigger Time: 485309869.824   [s; MET]
      Trigger Stop: 485309870.336   [s; MET]
               UTC: 2016-05-19T00:17:33.535660    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 71.1133226475316   Dec: 31.1966191090885  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.39
     Image Trigger?:     NO
     Rate S/N Ratio:     8.36660026534076  [ if not an image trigger ]
     Image S/N Ratio:    7.39

  Flight Position:   [ source = BAT ]
    RA: 71.1133226475316   Dec: 31.1966191090885  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 71.1217848321925   Dec: 31.2451441526404  [deg; J2000]  
        { 04h 44m 29.2s , +31d 14' 42.5" }
         +/- 2.20060926015604 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.95986648148545 [arcmin] (formal 1-sigma fit error)
    SNR: 9.85760310765386
 
  Angular difference between Flight and Ground position is 2.943701 arcmin
 
  Partial Coding Fraction: 0.1972656    [ including projection effects ]

  Duration
     T90: 35.6160000562668 +/- 6.06931693447473
        Measured from: -0.480000019073486
                   to: 35.1360000371933     [s; relative to TRIGTIME]
     T50: 24.5440000295639 +/- 7.46397852117202
        Measured from: 0.991999983787537
                   to: 25.5360000133514     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.156000018119812     
                   to: 0.843999981880188     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.991999983787537     
                   to: 41.1520000100136     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.647506   0.823296   0.416430   0.080598
           0.093573   0.096430   0.081626   0.069383 [error]
 Peak      0.077973   0.110899   0.076218   0.043241
           0.016219   0.018262   0.015066   0.012111 [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 2.52e-07 3.48e-07 3.56e-07 6.62e-07 1.17e-06 1.62e-06   erg/cm2
              Error 5.00e-08 4.79e-08 8.05e-08 2.98e-07 1.88e-07 3.84e-07   erg/cm2
Peak flux Power-law 9.10e-01 8.02e-01 4.86e-01 4.45e-01 2.39e+00 2.64e+00   ph/cm2/s
              Error 2.63e-01 1.52e-01 1.24e-01 2.22e-01 4.49e-01 4.92e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.42e-07 3.69e-07 3.53e-07 3.07e-07 1.12e-06 1.27e-06   erg/cm2
              Error 5.59e-08 9.07e-08 8.95e-08 4.05e-07 2.12e-07 5.19e-07   erg/cm2
Peak flux Cutoff-PL 8.62e-01 8.40e-01 5.01e-01 2.84e-01 2.36e+00 2.49e+00   ph/cm2/s
              Error 2.99e-01 1.93e-01 1.37e-01 2.54e-01 4.56e-01 5.36e-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    1.971    0.253    -      -           3.01e-03 5.01e-04   47.610 57
CPL   1.515    0.972      45.8    0.0      5.47e-03 0.00e+00   47.060 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.723    0.318    -      -           1.78e-02 3.58e-03   52.050 57
CPL   1.336    1.259      81.9   -3.2      2.87e-02 1.00e-01   51.750 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: 1.920000 sec.
T50 in the 50-300 keV band: 0.704000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   42.144   -0.992   41.152
T90    35.616   -0.480   35.136
T50    24.544    0.992   25.536
Peak    1.000   -0.156    0.844

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
   71.1218    31.2451   0.0195    41.5058   -55.2835         1.9709131      9.858 TRIG_00686818                 
 
Foreground time interval of the image:
 -0.992  41.152 (delta_t =  42.144 [sec])
Background time interval of the image:
-239.824  -0.992 (delta_t = 238.832 [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   -0.992 sec. to   41.152 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.97137     ( -0.24445   0.261164 )
Norm@50keV  : 3.00914E-03    ( -0.000508709   0.000493704 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.61 using 59 PHA bins.
# Reduced chi-squared =         0.8353 for     57 degrees of freedom 
# Null hypothesis probability =   8.077117e-01
 
Photon flux (15-150 keV)    in 42.14 sec: 0.445562 ( -0.061664  0.061705 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.16803e-06 ( -1.85935e-07  1.89326e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.992 sec. to   41.152 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51462     ( -1.2979   0.646098 )
Epeak [keV] : 45.7541      (   )
Norm@50keV  : 5.47464E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.06 using 59 PHA bins.
# Reduced chi-squared =         0.8404 for     56 degrees of freedom 
# Null hypothesis probability =   7.967730e-01
 
Photon flux (15-150 keV)    in 42.14 sec: 0.438885 ( -0.063933  0.063473 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12172e-06 ( -2.0804e-07  2.15166e-07 ) ergs/cm2

Band function

Time interval is from   -0.992 sec. to   41.152 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.40155   ( 1.37261   6.33147 )
beta        : -2.42101    ( 2.36196   0.598599 )
Epeak [keV] : 43.9920      ( -44.3645 -44.3645 )
Norm@50keV   : 6.40336E-03    ( -0.00376747   452.679 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.83 using 59 PHA bins.
# Reduced chi-squared =         0.8515 for     55 degrees of freedom 
# Null hypothesis probability =   7.753016e-01
 
Photon flux (15-150 keV)    in 42.14 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]    : 10.5963  (-1.63098  1.88547)
R^2/D10^2   : 0.167519  (-0.0780789   0.149645)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.74 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     57 degrees of freedom 
# Null hypothesis probability =   4.478945e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.642e-07   4.214e-08
25- 50  4.421e-07   8.358e-08
50-150  2.722e-07   9.492e-08
15-150  8.786e-07   1.877e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 71.1958       (-24.3811      48.3657)
Norm        : 2.18082       (-0.440831     0.555942)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.14 using 59 PHA bins.
# Reduced chi-squared =         0.8271 for     57 degrees of freedom 
# Null hypothesis probability =   8.209599e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.362e-07   4.507e-08
25- 50  3.775e-07   6.468e-08
50-150  4.910e-07   2.200e-07
15-150  1.105e-06   2.522e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.51859        (-1.95428      3.75757)
R1^2/D10^2  : 2.65804        (-2.22106      38.4829)
kT2 [keV]   : 15.2651        (-3.74889      22.4463)
R2^2/D10^2  : 3.28975E-02    (-0.0319871   0.0414064)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.61 using 59 PHA bins.
# Reduced chi-squared =         0.8657 for     55 degrees of freedom 
# Null hypothesis probability =   7.498660e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.459e-07   1.342e-07
25- 50  3.623e-07   1.804e-07
50-150  4.372e-07   2.556e-07
15-150  1.045e-06   5.525e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.156 sec. to    0.844 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.72325     ( -0.308438   0.327013 )
Norm@50keV  : 1.78309E-02    ( -0.00362524   0.00353786 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.05 using 59 PHA bins.
# Reduced chi-squared =         0.9131 for     57 degrees of freedom 
# Null hypothesis probability =   6.609528e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.38781 ( -0.44888  0.4495 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.64839e-07 ( -3.4252e-08  3.46734e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.156 sec. to    0.844 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33639     ( -1.56691   0.950516 )
Epeak [keV] : 81.8788      ( -75.5072 -81.8788 )
Norm@50keV  : 2.86760E-02    ( -0.028676   0.171497 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.75 using 59 PHA bins.
# Reduced chi-squared =         0.9242 for     56 degrees of freedom 
# Null hypothesis probability =   6.362707e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.36371 ( -0.45635  0.45581 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

Time interval is from   -0.156 sec. to    0.844 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.971484   ( 0.933295   0.933295 )
beta        : -1.97408    ( 1.98563   0.544741 )
Epeak [keV] : 55.5751      ( -54.4767 -54.4767 )
Norm@50keV   : 4.86396E-02    ( -0.0514539   6748.39 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.61 using 59 PHA bins.
# Reduced chi-squared =         0.9384 for     55 degrees of freedom 
# Null hypothesis probability =   6.048950e-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]    : 12.4053  (-2.51945  3.23968)
R^2/D10^2   : 0.526801  (-0.305803   0.683087)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.40 using 59 PHA bins.
# Reduced chi-squared =          1.025 for     57 degrees of freedom 
# Null hypothesis probability =   4.236352e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.718e-08   6.103e-09
25- 50  5.619e-08   1.669e-08
50-150  5.313e-08   2.253e-08
15-150  1.265e-07   4.162e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 133.569       (-65.4757      -129.142)
Norm        : 9.94069       (-2.10412     3.03039)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.78 using 59 PHA bins.
# Reduced chi-squared =         0.9084 for     57 degrees of freedom 
# Null hypothesis probability =   6.706946e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.575e-08   1.494e-08
25- 50  4.689e-08   2.630e-08
50-150  8.803e-08   5.600e-08
15-150  1.607e-07   9.440e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.49596        (-4.21131      4.30673)
R1^2/D10^2  : 2.33577        (-1.75358      3.44154)
kT2 [keV]   : 27.1039        (-12.8194      -27.2836)
R2^2/D10^2  : 2.06643E-02    (-0.0200279   0.0642861)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.88 using 59 PHA bins.
# Reduced chi-squared =         0.9433 for     55 degrees of freedom 
# Null hypothesis probability =   5.944512e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.504e-08   1.485e-08
25- 50  4.996e-08   2.688e-08
50-150  8.720e-08   5.410e-08
15-150  1.622e-07   8.595e-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: 1.97137     ( -0.24445   0.261164 )
Norm@50keV  : 3.00914E-03    ( -0.000508709   0.000493704 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.61 using 59 PHA bins.
# Reduced chi-squared =         0.8353 for     57 degrees of freedom 
# Null hypothesis probability =   8.077117e-01
 
Photon flux (15-150 keV)    in 42.14 sec: 0.445537 ( -0.061664  0.0616927 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.16783e-06 ( -1.8588e-07  1.89375e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51381     ( -1.29765   0.646304 )
Epeak [keV] : 45.7466      (   )
Norm@50keV  : 5.48058E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.06 using 59 PHA bins.
# Reduced chi-squared =         0.8404 for     56 degrees of freedom 
# Null hypothesis probability =   7.967730e-01
 
Photon flux (15-150 keV)    in 42.14 sec: 0.438789 ( -0.063906  0.063554 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.122e-06 ( -2.08412e-07  2.15449e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.40155   ( 1.37261   6.33147 )
beta        : -2.42101    ( 2.36196   0.598599 )
Epeak [keV] : 43.9920      ( -44.3645 -44.3645 )
Norm@50keV   : 6.40336E-03    ( -0.00376747   364.395 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.83 using 59 PHA bins.
# Reduced chi-squared =         0.8515 for     55 degrees of freedom 
# Null hypothesis probability =   7.753016e-01
 
Photon flux (15-150 keV)    in 42.14 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)  = 3.48e-07
S(50-100 keV) = 3.56e-07

T90 vs. Hardness ratio plot

T90                                   = 35.6160000562668 sec.
Hardness ratio (energy fluence ratio) = 1.02299

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.27149
Count Ratio (50-100 keV) / (15-25 keV) = 0.643129

Mask shadow pattern

IMX = 5.039675259548826E-01, IMY = 7.273743243995497E-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:
-239.824000 -0.992000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6350  22.0181    0.3  27.1  -53.1   9.2845  33.2    0.2	Crab                          
141.1728  41.9816    3.3  54.3   21.1   4.6743   3.5 ------	UNKNOWN                       
 99.8724   4.5904    2.3   3.8  -37.7   1.0257   5.1 ------	UNKNOWN                       
 91.0721  -0.9630    2.8  10.5 -116.3   0.8670   4.2 ------	UNKNOWN                       
 67.7195 -28.7463    3.2  43.9 -150.4   1.5544   3.6 ------	UNKNOWN                       
 57.4707 -41.0310    3.0  57.9 -156.7   5.3420   3.9 ------	UNKNOWN

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

Time interval of the image:
-0.992000 41.152000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.7546  21.8718    7.2  26.9  -53.1  -0.1605  -1.6   10.9	Crab                          
 71.1218  31.2451    1.2  41.5  -55.3   1.9708   9.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
484.376590 790.976580
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.5702 -40.6698    3.4  37.1  156.0   1.6010   3.4    7.2	Vela X-1                      
148.9575 -18.2490    3.5  24.2  111.8   1.1311   3.3 ------	UNKNOWN                       
128.0454  34.6146    2.5  38.7  -16.6   1.6620   4.6 ------	UNKNOWN                       
 91.7656 -37.0233    2.8  47.3 -154.6   2.5264   4.2 ------	UNKNOWN                       
 82.2300 -27.6865    2.6  50.2 -138.7   5.0744   4.4 ------	UNKNOWN

Plot creation:
Tue Jun 21 10:23:46 EDT 2016