batgrbproduct analysis for trigger=515015

batgrbproduct Analysis for Trigger=515015

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): Mon Jan 13 06:40:22 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger515015
======================================================================

  Trigger: 00515015      Segment: 000

  BAT Trigger Time: 350959283.2   [s; MET]
      Trigger Stop: 350959287.296   [s; MET]
               UTC: 2012-02-15T00:41:15.308260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 30.0323071653144   Dec: 8.79177878164953  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.68
     Image Trigger?:     NO
     Rate S/N Ratio:     12.8062484748657  [ if not an image trigger ]
     Image S/N Ratio:    8.68

  Flight Position:   [ source = BAT ]
    RA: 30.0323071653144   Dec: 8.79177878164953  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 30.0530280079406   Dec: 8.80195054428953  [deg; J2000]  
        { 02h 00m 12.7s , +08d 48' 07.0" }
         +/- 1.78962062589511 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.04380251779661 [arcmin] (formal 1-sigma fit error)
    SNR: 13.2443689584423
 
  Angular difference between Flight and Ground position is 1.371858 arcmin
 
  Partial Coding Fraction: 0.84375    [ including projection effects ]

  Duration
     T90: 7.92399996519089 +/- 1.19836059316863
        Measured from: 0.364000022411346
                   to: 8.28799998760223     [s; relative to TRIGTIME]
     T50: 2.98799991607666 +/- 1.24086746531098
        Measured from: 2.04000002145767
                   to: 5.02799993753433     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.75599998235703     
                   to: 2.75599998235703     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.19199997186661     
                   to: 8.78400003910065     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.131800   0.174669   0.106805   0.028537
           0.016737   0.017312   0.015335   0.013047 [error]
 Peak      0.012389   0.030076   0.021575   0.005184
           0.005355   0.005616   0.004917   0.004139 [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 4.18e-08 6.86e-08 8.54e-08 2.11e-07 2.55e-07 4.07e-07   erg/cm2
              Error 7.45e-09 7.96e-09 1.47e-08 7.46e-08 3.47e-08 8.83e-08   erg/cm2
Peak flux Power-law 1.71e-01 1.90e-01 1.50e-01 1.95e-01 5.83e-01 7.06e-01   ph/cm2/s
              Error 6.75e-02 4.66e-02 3.90e-02 1.03e-01 1.31e-01 1.59e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.99e-08 7.24e-08 8.58e-08 1.03e-07 2.45e-07 3.02e-07   erg/cm2
              Error 8.33e-09 1.07e-08 1.59e-08 1.15e-07 3.99e-08 1.18e-07   erg/cm2
Peak flux Cutoff-PL 1.51e-01 2.01e-01 1.59e-01 9.75e-02 5.68e-01 6.08e-01   ph/cm2/s
              Error 8.09e-02 5.69e-02 4.56e-02 1.51e-01 1.37e-01 2.03e-01   ph/cm2/s
 
Fluence        Band 3.83e-08 7.46e-08 8.19e-08 1.67e-07 2.47e-07 3.64e-07   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    1.684    0.205    -      -           2.76e-03 3.53e-04   56.610 57
CPL   1.259    0.780      78.6  -23.9      4.73e-03 6.40e-03   55.800 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.341    0.377    -      -           4.85e-03 1.06e-03   52.010 57
CPL   0.671    2.071     101.4    0.0      1.04e-02 8.58e-02   51.490 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: 9.536000 sec.
T50 in the 50-300 keV band: 4.992000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    9.976   -1.192    8.784
T90     7.924    0.364    8.288
T50     2.988    2.040    5.028
Peak    1.000    1.756    2.756

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
   30.0530     8.8020   0.0145    29.7040    -8.5363         0.4331100     13.244 TRIG_00515015                 
 
Foreground time interval of the image:
 -1.192   8.784 (delta_t =   9.976 [sec])
Background time interval of the image:
-239.200  -1.192 (delta_t = 238.008 [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 4.096000

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 4.096000

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 4.096000

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:

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   -1.192 sec. to    8.784 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.68432     ( -0.201608   0.207994 )
Norm@50keV  : 2.75969E-03    ( -0.000355949   0.00034995 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.61 using 59 PHA bins.
# Reduced chi-squared =         0.9931 for     57 degrees of freedom 
# Null hypothesis probability =   4.897692e-01
 
Photon flux (15-150 keV)    in 9.976 sec: 0.364533 ( -0.042321  0.0423443 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.55231e-07 ( -3.44378e-08  3.50223e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.192 sec. to    8.784 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25931     ( -0.962982   0.597638 )
Epeak [keV] : 78.5724      ( -30.8165 -78.5806 )
Norm@50keV  : 4.73069E-03    ( -0.00151364   0.0112847 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.80 using 59 PHA bins.
# Reduced chi-squared =         0.9965 for     56 degrees of freedom 
# Null hypothesis probability =   4.823374e-01
 
Photon flux (15-150 keV)    in 9.976 sec: 0.358614 ( -0.043886  0.043754 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.4477e-07 ( -3.96925e-08  4.01514e-08 ) ergs/cm2

Band function

Time interval is from   -1.192 sec. to    8.784 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.01629   ( -4.36608   -4.36608 )
beta        : -1.88515    ( -0.356677   0.265266 )
Epeak [keV] : 28.5325      ( -27.3437 5.18303 )
Norm@50keV   : 6.68554    ( -6.68217   78.426 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.36 using 59 PHA bins.
# Reduced chi-squared =         0.9884 for     55 degrees of freedom 
# Null hypothesis probability =   4.988775e-01
 
Photon flux (15-150 keV)    in 9.976 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.4746e-07 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.8646  (-1.64173  1.96054)
R^2/D10^2   : 9.27095E-02  (-0.0397343   0.0674407)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.70 using 59 PHA bins.
# Reduced chi-squared =          1.240 for     57 degrees of freedom 
# Null hypothesis probability =   1.049135e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.751e-08   5.557e-09
25- 50  8.542e-08   1.262e-08
50-150  7.175e-08   1.998e-08
15-150  1.847e-07   2.898e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 133.745       (-52.9291      -131.891)
Norm        : 1.52271       (-0.20076     0.268934)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.79 using 59 PHA bins.
# Reduced chi-squared =         0.9787 for     57 degrees of freedom 
# Null hypothesis probability =   5.206908e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.935e-08   6.624e-09
25- 50  7.167e-08   1.973e-08
50-150  1.346e-07   7.185e-08
15-150  2.456e-07   9.335e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.34508        (-2.19905      2.47084)
R1^2/D10^2  : 0.383830        (-0.229167      0.841932)
kT2 [keV]   : 27.0869        (-9.93073      59.6924)
R2^2/D10^2  : 3.24258E-03    (-0.00309952   0.013129)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.75 using 59 PHA bins.
# Reduced chi-squared =         0.9954 for     55 degrees of freedom 
# Null hypothesis probability =   4.842002e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.874e-08   1.871e-08
25- 50  7.548e-08   3.487e-08
50-150  1.349e-07   7.469e-08
15-150  2.491e-07   1.218e-07

Peak spectrum fit

Power-law model

Time interval is from    1.756 sec. to    2.756 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34144     ( -0.37889   0.374368 )
Norm@50keV  : 4.85008E-03    ( -0.00106375   0.00106163 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.01 using 59 PHA bins.
# Reduced chi-squared =         0.9125 for     57 degrees of freedom 
# Null hypothesis probability =   6.621958e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.583276 ( -0.13073  0.131267 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.74616e-08 ( -1.13556e-08  1.1544e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    1.756 sec. to    2.756 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.670648     ( -2.45056   1.69078 )
Epeak [keV] : 101.395      ( -101.387 -101.387 )
Norm@50keV  : 1.04386E-02    ( -0.00651914   0.16504 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.49 using 59 PHA bins.
# Reduced chi-squared =         0.9195 for     56 degrees of freedom 
# Null hypothesis probability =   6.459983e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.567835 ( -0.137786  0.136274 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.53001e-08 ( -1.30392e-08  1.26312e-08 ) ergs/cm2

Band function

Time interval is from    1.756 sec. to    2.756 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.249158   ( 0.390047   5.34533 )
beta        : -1.82467    ( 1.70294   0.671057 )
Epeak [keV] : 62.7004      ( -62.3083 180.113 )
Norm@50keV   : 3.45503E-02    ( -0.0372605   27.5436 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.02 using 59 PHA bins.
# Reduced chi-squared =         0.9277 for     55 degrees of freedom 
# Null hypothesis probability =   6.273752e-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]    : 15.6762  (-3.5788  5.40709)
R^2/D10^2   : 5.96957E-02  (-0.0383446   0.088104)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.86 using 59 PHA bins.
# Reduced chi-squared =         0.9449 for     57 degrees of freedom 
# Null hypothesis probability =   5.936903e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.047e-09   1.572e-09
25- 50  1.259e-08   4.732e-09
50-150  2.146e-08   1.028e-08
15-150  3.710e-08   1.415e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.359       (-95.567      -199.363)
Norm        : 2.42598       (-0.531134     0.532437)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.56 using 59 PHA bins.
# Reduced chi-squared =         0.9221 for     57 degrees of freedom 
# Null hypothesis probability =   6.422556e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.041e-09   3.645e-09
25- 50  1.162e-08   6.765e-09
50-150  2.549e-08   1.490e-08
15-150  4.315e-08   2.496e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.18872        (-1.18913      3.54345)
R1^2/D10^2  : 3.21197E+04        (-31969.4      -31969.4)
kT2 [keV]   : 16.5660        (-3.93882      6.1224)
R2^2/D10^2  : 4.82571E-02    (-0.0322785   0.0408077)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.72 using 59 PHA bins.
# Reduced chi-squared =         0.9403 for     55 degrees of freedom 
# Null hypothesis probability =   6.008106e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.626e-09   1.483e-09
25- 50  1.177e-08   5.599e-09
50-150  2.286e-08   1.121e-08
15-150  3.825e-08   1.736e-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: 1.68432     ( -0.201608   0.207994 )
Norm@50keV  : 2.75969E-03    ( -0.000355949   0.00034995 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.61 using 59 PHA bins.
# Reduced chi-squared =         0.9931 for     57 degrees of freedom 
# Null hypothesis probability =   4.897692e-01
 
Photon flux (15-150 keV)    in 9.976 sec: 0.364533 ( -0.042321  0.0423443 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.55231e-07 ( -3.44378e-08  3.50223e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25931     ( -0.962982   0.597638 )
Epeak [keV] : 78.5724      ( -26.6773 -78.5806 )
Norm@50keV  : 4.73069E-03    ( -0.00151364   0.0112847 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.80 using 59 PHA bins.
# Reduced chi-squared =         0.9965 for     56 degrees of freedom 
# Null hypothesis probability =   4.823374e-01
 
Photon flux (15-150 keV)    in 9.976 sec: 0.358614 ( -0.043886  0.043754 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.4477e-07 ( -3.96925e-08  4.01514e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.01629   ( -4.36608   -4.36608 )
beta        : -1.88515    ( -0.356677   0.265266 )
Epeak [keV] : 28.5325      ( -27.3437 5.18303 )
Norm@50keV   : 6.68554    ( -6.68217   78.4226 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.36 using 59 PHA bins.
# Reduced chi-squared =         0.9884 for     55 degrees of freedom 
# Null hypothesis probability =   4.988775e-01
 
Photon flux (15-150 keV)    in 9.976 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.4746e-07 ( 0  0 ) ergs/cm2

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

S(25-50 keV)  = 6.86e-08
S(50-100 keV) = 8.54e-08

T90 vs. Hardness ratio plot

T90                                   = 7.92399996519089 sec.
Hardness ratio (energy fluence ratio) = 1.2449

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.32526
Count Ratio (50-100 keV) / (15-25 keV) = 0.810357

Mask shadow pattern

IMX = 5.641625483784699E-01, IMY = 8.468029804374197E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

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:
-239.200000 -1.192000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 77.2567 -42.8201    2.1  38.1  156.1   1.4439   5.4 ------	UNKNOWN                       
 40.0347 -37.7344    3.0  19.9 -155.0   0.6271   3.8 ------	UNKNOWN                       
  1.3527  17.7448    3.6  54.4  -33.1   2.8369   3.2 ------	UNKNOWN

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

Time interval of the image:
-1.192000 8.784000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 30.0530   8.8020    0.9  29.7   -8.5   0.4330  13.2 ------	UNKNOWN                       
 10.5226 -71.1119    2.5  56.5 -149.9   0.7013   4.6 ------	UNKNOWN                       
  1.8899 -57.6429    2.9  49.9 -134.5   0.5777   4.0 ------	UNKNOWN                       
359.1968   9.9013    2.5  51.5  -42.6   0.6725   4.7  596.0	UNKNOWN                       
359.2801   5.8682    2.2  49.3  -47.0   0.6886   5.2  354.7	UNKNOWN                       
359.2219 -13.0547    2.4  42.4  -71.7   0.5772   4.7 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
90.900600 962.830000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
359.1029  30.6586    2.6  36.2  -29.6   2.3732   4.4 ------	UNKNOWN                       
  9.8202 -41.0556    3.0  53.2 -142.1  10.1446   3.9 ------	UNKNOWN                       
  2.4213 -31.1894    2.5  47.9 -128.9   8.9654   4.5 ------	UNKNOWN

Plot creation:
Sat May 30 20:18:33 EDT 2015