batgrbproduct analysis for trigger=151486

batgrbproduct Analysis for Trigger=151486

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 Jan 22 20:41:25 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger151486
======================================================================

  Trigger: 00151486      Segment: 000

  BAT Trigger Time: 146375368.832   [s; MET]
      Trigger Stop: 146375370.88   [s; MET]
               UTC: 2005-08-22T03:49:29.144560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 51.0802641049472   Dec: -46.0231259929805  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.73
     Image Trigger?:     NO
     Rate S/N Ratio:     7.41619848709566  [ if not an image trigger ]
     Image S/N Ratio:    9.73

  Flight Position:   [ source = BAT ]
    RA: 51.0802641049472   Dec: -46.0231259929805  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 51.1031497598258   Dec: -46.0289054584432  [deg; J2000]  
        { 03h 24m 24.8s , -46d 01' 44.1" }
         +/- 1.65068220179193 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.762869103238667 [arcmin] (formal 1-sigma fit error)
    SNR: 14.8651935312887
 
  Angular difference between Flight and Ground position is 1.014518 arcmin
 
  Partial Coding Fraction: 0.3710938    [ including projection effects ]

  Duration
     T90: 104.291999995708 +/- 15.8205117471842
        Measured from: 0.848000019788742
                   to: 105.140000015497     [s; relative to TRIGTIME]
     T50: 45.4920000135899 +/- 4.95434557885522
        Measured from: 10.6240000128746
                   to: 56.1160000264645     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 47.5720000267029     
                   to: 48.5720000267029     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.55599999427795     
                   to: 133.688000023365     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.181269   1.910533   0.721018   0.374851
           0.085050   0.090213   0.087177   0.094131 [error]
 Peak      0.089694   0.105115   0.050321   0.002453
           0.007774   0.008196   0.007465   0.007621 [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 7.31e-07 8.15e-07 6.50e-07 8.60e-07 2.51e-06 3.06e-06   erg/cm2
              Error 6.20e-08 4.90e-08 7.89e-08 2.05e-07 1.73e-07 2.95e-07   erg/cm2
Peak flux Power-law 9.81e-01 7.44e-01 3.76e-01 2.73e-01 2.23e+00 2.37e+00   ph/cm2/s
              Error 1.35e-01 6.98e-02 6.10e-02 8.48e-02 2.09e-01 2.25e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.03e-07 8.55e-07 5.99e-07 3.10e-07 2.35e-06 2.47e-06   erg/cm2
              Error 7.04e-08 6.61e-08 1.07e-07 -------- 2.42e-07 5.10e-07   erg/cm2
Peak flux Cutoff-PL 9.18e-01 7.98e-01 3.69e-01 1.13e-01 2.16e+00 2.20e+00   ph/cm2/s
              Error 1.55e-01 9.48e-02 6.92e-02 1.57e-01 2.21e-01 2.62e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 9.25e-01 7.92e-01 3.71e-01 1.22e-01 2.17e+00 2.21e+00   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    2.326    0.131    -      -           1.94e-03 1.66e-04   53.570 57
CPL   1.807    0.000      13.9    0.0      4.00e-03 0.00e+00   51.350 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.982    0.184    -      -           1.50e-02 1.81e-03   48.530 57
CPL   1.325    0.839      42.6    0.0      3.59e-02 0.00e+00   46.360 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: 57.792000 sec.
T50 in the 50-300 keV band: 43.520000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  135.244   -1.556  133.688
T90   104.292    0.848  105.140
T50    45.492   10.624   56.116
Peak    1.000   47.572   48.572

Click here for the BAT GCN circular template

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
   51.1031   -46.0289   0.0130    41.9422   165.5905         1.8206522     14.865 TRIG_00151486                 
 
Foreground time interval of the image:
 -1.556  23.869 (delta_t =  25.425 [sec])
Background time interval of the image:
-119.832  -1.556 (delta_t = 118.276 [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 2.048000

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 2.048000

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 2.048000

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   -1.556 sec. to  133.688 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.32621     ( -0.128849   0.133534 )
Norm@50keV  : 1.93607E-03    ( -0.000166594   0.000164962 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.57 using 59 PHA bins.
# Reduced chi-squared =         0.9398 for     57 degrees of freedom 
# Null hypothesis probability =   6.046140e-01
 
Photon flux (15-150 keV)    in 135.2 sec: 0.343348 ( -0.0202085  0.0202337 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.51385e-06 ( -1.71841e-07  1.74954e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.556 sec. to  133.688 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.80689     (     )
Epeak [keV] : 13.9432      (   )
Norm@50keV  : 4.00190E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.35 using 59 PHA bins.
# Reduced chi-squared =         0.9169 for     56 degrees of freedom 
# Null hypothesis probability =   6.513952e-01
 
Photon flux (15-150 keV)    in 135.2 sec: 0.333159 ( -0.023086  0.023129 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.34755e-06 ( -2.31706e-07  2.52797e-07 ) ergs/cm2

Band function

Time interval is from   -1.556 sec. to  133.688 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.38258   ( -0.755082   1.37954 )
beta        : -2.61346    ( 2.64423   0.335521 )
Epeak [keV] : 21.9036      ( -11.8896 6.8775 )
Norm@50keV   : 7.78152E-03    ( -0.00436208   574.581 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.70 using 59 PHA bins.
# Reduced chi-squared =         0.9036 for     55 degrees of freedom 
# Null hypothesis probability =   6.767813e-01
 
Photon flux (15-150 keV)    in 135.2 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]    : 8.18878  (-0.548062  0.588525)
R^2/D10^2   : 0.321440  (-0.0799659   0.107191)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          88.99 using 59 PHA bins.
# Reduced chi-squared =          1.561 for     57 degrees of freedom 
# Null hypothesis probability =   4.283790e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.359e-07   5.300e-08
25- 50  9.763e-07   6.929e-08
50-150  2.766e-07   5.442e-08
15-150  1.789e-06   1.264e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 39.6953       (-5.99911      7.60706)
Norm        : 2.17531       (-0.268929     0.317052)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.56 using 59 PHA bins.
# Reduced chi-squared =         0.9221 for     57 degrees of freedom 
# Null hypothesis probability =   6.422717e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.736e-07   5.415e-08
25- 50  8.833e-07   6.037e-08
50-150  6.776e-07   1.393e-07
15-150  2.235e-06   1.798e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.11619        (-1.5149      1.8619)
R1^2/D10^2  : 1.56387        (-0.982879      4.59443)
kT2 [keV]   : 14.7069        (-4.05017      21.2129)
R2^2/D10^2  : 1.93547E-02    (-0.0176768   0.0649559)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.16 using 59 PHA bins.
# Reduced chi-squared =          1.003 for     55 degrees of freedom 
# Null hypothesis probability =   4.684758e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.821e-07   1.824e-07
25- 50  8.528e-07   2.515e-07
50-150  6.941e-07   3.627e-07
15-150  2.229e-06   6.731e-07

Peak spectrum fit

Power-law model

Time interval is from   47.572 sec. to   48.572 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.98192     ( -0.179039   0.188245 )
Norm@50keV  : 1.49746E-02    ( -0.00182973   0.00179149 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.53 using 59 PHA bins.
# Reduced chi-squared =         0.8515 for     57 degrees of freedom 
# Null hypothesis probability =   7.801760e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.22773 ( -0.209257  0.209296 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.37972e-07 ( -1.57906e-08  1.61622e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   47.572 sec. to   48.572 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32482     ( -0.926159   0.751872 )
Epeak [keV] : 42.5606      (   )
Norm@50keV  : 3.58779E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.36 using 59 PHA bins.
# Reduced chi-squared =         0.8279 for     56 degrees of freedom 
# Null hypothesis probability =   8.172192e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.16387 ( -0.22074  0.22106 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.28434e-07 ( -1.7958e-08  1.9267e-08 ) ergs/cm2

Band function

Time interval is from   47.572 sec. to   48.572 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.32485   ( -3.44191   0.986878 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 42.5517      ( -13.9094 -42.5517 )
Norm@50keV   : 3.58720E-02    ( -0.017163   0.0877355 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.36 using 59 PHA bins.
# Reduced chi-squared =         0.8430 for     55 degrees of freedom 
# Null hypothesis probability =   7.900407e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.17253 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.29586e-07 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.0253  (-1.06711  1.20853)
R^2/D10^2   : 1.01842  (-0.359193   0.550612)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.47 using 59 PHA bins.
# Reduced chi-squared =          1.114 for     57 degrees of freedom 
# Null hypothesis probability =   2.589445e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.086e-08   3.805e-09
25- 50  5.206e-08   6.080e-09
50-150  2.737e-08   7.110e-09
15-150  1.003e-07   1.306e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 67.0578       (-17.5893      28.1307)
Norm        : 11.1026       (-1.62655     1.89383)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.38 using 59 PHA bins.
# Reduced chi-squared =         0.8137 for     57 degrees of freedom 
# Null hypothesis probability =   8.414956e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.835e-08   3.925e-09
25- 50  4.457e-08   4.735e-09
50-150  5.542e-08   1.465e-08
15-150  1.283e-07   1.680e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.09658        (-2.03763      3.81628)
R1^2/D10^2  : 18.1976        (-15.2185      752.096)
kT2 [keV]   : 13.7989        (-3.04761      15.6872)
R2^2/D10^2  : 0.249121    (-0.229378   0.507005)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.26 using 59 PHA bins.
# Reduced chi-squared =         0.8774 for     55 degrees of freedom 
# Null hypothesis probability =   7.281170e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.859e-08   1.442e-08
25- 50  4.394e-08   1.702e-08
50-150  4.586e-08   2.147e-08
15-150  1.184e-07   4.614e-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: 2.28708     ( -0.227018   0.245869 )
Norm@50keV  : 3.46729E-03    ( -0.000575135   0.000562833 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.12 using 59 PHA bins.
# Reduced chi-squared =          1.107 for     57 degrees of freedom 
# Null hypothesis probability =   2.691269e-01
 
Photon flux (15-150 keV)    in 25.42 sec: 0.601615 ( -0.0622283  0.06223 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.40291e-07 ( -1.10635e-07  1.1481e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.98946     ( -1.98946   -1.98946 )
Epeak [keV] : 1.38214      ( -0.686925 31.2233 )
Norm@50keV  : 5.22359E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.67 using 59 PHA bins.
# Reduced chi-squared =          1.137 for     56 degrees of freedom 
# Null hypothesis probability =   2.247308e-01
 
Photon flux (15-150 keV)    in 25.42 sec: 0.601550 ( -0.062432  0.062072 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.38863e-07 ( -1.36981e-07  1.16185e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.330469   ( 1.5371   1.5371 )
beta        : -2.33075    ( 2.31319   0.248129 )
Epeak [keV] : 18.4151      ( -14.0086 17.5314 )
Norm@50keV   : 0.493412    ( -0.487913   2363.44 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.92 using 59 PHA bins.
# Reduced chi-squared =          1.144 for     55 degrees of freedom 
# Null hypothesis probability =   2.163329e-01
 
Photon flux (15-150 keV)    in 25.42 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)  = 8.15e-07
S(50-100 keV) = 6.50e-07

T90 vs. Hardness ratio plot

T90                                   = 104.291999995708 sec.
Hardness ratio (energy fluence ratio) = 0.797546

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.875881
Count Ratio (50-100 keV) / (15-25 keV) = 0.33055

Mask shadow pattern

IMX = -8.703118914732342E-01, IMY = -2.236117712951145E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

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:
-119.832000 -1.556000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.4196 -60.6390   41.5  26.9  -62.2   0.0417   0.3    3.2	Cen X-3                       
186.6420 -62.7592    2.4  26.1  -44.4   0.6542   4.9    0.8	GX 301-2                      
264.8266 -44.3441    5.1  50.0   26.3   1.1115   2.2    7.3	4U 1735-44                    
221.4505 -47.5146    2.5  44.1  -14.3   0.9071   4.6 ------	UNKNOWN                       
109.4202 -36.0678    2.2  49.0 -131.6   2.9685   5.2 ------	UNKNOWN

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

Time interval of the image:
-1.556000 23.868600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.0599 -60.6543    9.0  26.8  -62.6  -0.1075  -1.3    7.8	Cen X-3                       
186.4178 -62.8624   42.3  26.0  -44.6  -0.0203  -0.3    8.6	GX 301-2                      
264.8140 -44.5556    5.7  49.8   26.3  -0.5273  -2.0    7.0	4U 1735-44                    
 51.1031 -46.0289    0.8  41.9  165.6   1.8200  14.9 ------	UNKNOWN                       
 81.6478 -31.3987    2.1  54.5 -160.8   1.1332   5.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
82.268630 302.207900
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
  5.6838 -28.1281    3.2  39.7  101.7   2.5304   3.6 ------	UNKNOWN                       
 20.9551 -37.3383    2.4  24.0  101.5   1.1641   4.9 ------	UNKNOWN                       
 46.0822 -16.8427    2.6  29.5  171.2   0.9151   4.5 ------	UNKNOWN

Plot creation:
Sun May 31 15:54:34 EDT 2015