batgrbproduct analysis for trigger=443861

batgrbproduct Analysis for Trigger=443861

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 Jan 14 00:38:59 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger443861
======================================================================

  Trigger: 00443861      Segment: 000

  BAT Trigger Time: 317871879.616   [s; MET]
      Trigger Stop: 317871887.808   [s; MET]
               UTC: 2011-01-28T01:44:33.009360    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 193.874023479601   Dec: 28.0796152509682  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.29
     Image Trigger?:     NO
     Rate S/N Ratio:     10.0498756211209  [ if not an image trigger ]
     Image S/N Ratio:    8.29

  Flight Position:   [ source = BAT ]
    RA: 193.874023479601   Dec: 28.0796152509682  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 193.87576961866   Dec: 28.0983042270185  [deg; J2000]  
        { 12h 55m 30.2s , +28d 05' 53.9" }
         +/- 1.83477379013706 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.84742287166061 [arcmin] (formal 1-sigma fit error)
    SNR: 12.7812082781226
 
  Angular difference between Flight and Ground position is 1.125141 arcmin
 
  Partial Coding Fraction: 0.375    [ including projection effects ]

  Duration
     T90: 14.1519999504089 +/- 2.48970440314957
        Measured from: -1.48000001907349
                   to: 12.6719999313354     [s; relative to TRIGTIME]
     T50: 7.0359999537468 +/- 2.07859953941348
        Measured from: 1.37199997901917
                   to: 8.40799993276596     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 3.57599997520447     
                   to: 4.57599997520447     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.53600001335144     
                   to: 14.0199999809265     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.116698   0.278400   0.252748   0.150812
           0.034952   0.036506   0.033874   0.030965 [error]
 Peak      0.014075   0.033157   0.038106   0.009884
           0.008752   0.009213   0.008625   0.007468 [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 4.62e-08 1.11e-07 2.14e-07 1.00e-06 5.78e-07 1.37e-06   erg/cm2
              Error 1.36e-08 1.95e-08 3.13e-08 3.48e-07 8.21e-08 3.60e-07   erg/cm2
Peak flux Power-law 2.06e-01 2.42e-01 2.05e-01 2.94e-01 7.57e-01 9.45e-01   ph/cm2/s
              Error 1.10e-01 8.26e-02 6.62e-02 1.95e-01 2.29e-01 2.82e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.56e-08 1.12e-07 2.15e-07 9.24e-07 5.77e-07 1.30e-06   erg/cm2
              Error 1.23e-08 2.01e-08 3.67e-08 5.87e-07 8.42e-08 5.38e-07   erg/cm2
Peak flux Cutoff-PL 1.53e-01 2.58e-01 2.33e-01 1.19e-01 7.23e-01 7.63e-01   ph/cm2/s
              Error 1.28e-01 9.83e-02 8.21e-02 1.56e-01 2.35e-01 2.28e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.70e-01 2.52e-01 2.28e-01 1.59e-01 7.41e-01 8.19e-01   ph/cm2/s
              Error -------- -------- 8.56e-02 -------- -------- --------   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.060    0.247    -      -           3.30e-03 4.60e-04   50.640 57
CPL   2.428    0.653     135.4    0.0      2.38e-04 0.00e+00   49.730 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.239    0.481    -      -           6.41e-03 1.87e-03   56.600 57
CPL   0.055    2.216      92.1    0.0      2.21e-02 0.00e+00   55.370 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: 8.064000 sec.
T50 in the 50-300 keV band: 3.840000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   16.556   -2.536   14.020
T90    14.152   -1.480   12.672
T50     7.036    1.372    8.408
Peak    1.000    3.576    4.576

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
  193.8758    28.0983   0.0150    41.8420   166.5338         0.8845074     12.781 TRIG_00443861                 
 
Foreground time interval of the image:
 -2.536  14.020 (delta_t =  16.556 [sec])
Background time interval of the image:
-239.616  -2.536 (delta_t = 237.080 [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 8.192000

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 8.192000

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 8.192000

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   -2.536 sec. to   14.020 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.06018     ( -0.253343   0.24043 )
Norm@50keV  : 3.29543E-03    ( -0.000462276   0.000457476 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.64 using 59 PHA bins.
# Reduced chi-squared =         0.8884 for     57 degrees of freedom 
# Null hypothesis probability =   7.110122e-01
 
Photon flux (15-150 keV)    in 16.56 sec: 0.380926 ( -0.0552738  0.0556265 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.78028e-07 ( -8.18498e-08  8.22953e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -2.536 sec. to   14.020 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.42829     ( -1.02195   0.2833 )
Epeak [keV] : 135.432      ( -999.746 -999.746 )
Norm@50keV  : 2.37551E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.73 using 59 PHA bins.
# Reduced chi-squared =         0.8881 for     56 degrees of freedom 
# Null hypothesis probability =   7.096093e-01
 
Photon flux (15-150 keV)    in 16.56 sec: 0.380816 ( -0.057313  0.055603 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.76778e-07 ( -8.51018e-08  8.33879e-08 ) ergs/cm2

Band function

Time interval is from   -2.536 sec. to   14.020 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.229155   ( 0.182809   0.182809 )
beta        : -1.21162    ( 1.19632   0.358157 )
Epeak [keV] : 69.5125      ( -68.4041 224.606 )
Norm@50keV   : 1.74056E-02    ( -0.0187357   34.8407 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
# Reduced chi-squared =         0.9087 for     55 degrees of freedom 
# Null hypothesis probability =   6.664842e-01
 
Photon flux (15-150 keV)    in 16.56 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]    : 21.3360  (-3.89749  5.29916)
R^2/D10^2   : 1.45367E-02  (-0.00739243   0.0136891)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.57 using 59 PHA bins.
# Reduced chi-squared =          1.080 for     57 degrees of freedom 
# Null hypothesis probability =   3.158571e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.056e-08   6.148e-09
25- 50  1.067e-07   2.629e-08
50-150  3.625e-07   9.555e-08
15-150  4.898e-07   9.845e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 1.62025       (-0.227292     0.22726)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.48 using 59 PHA bins.
# Reduced chi-squared =          1.096 for     57 degrees of freedom 
# Null hypothesis probability =   2.877349e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.684e-08   3.823e-08
25- 50  1.286e-07   7.135e-08
50-150  2.820e-07   1.581e-07
15-150  4.774e-07   2.704e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 11.4740        (-3.78681      4.09326)
R1^2/D10^2  : 7.65174E-02        (-0.0390055      0.120227)
kT2 [keV]   : 65.6017        (-63.2898      -97.2689)
R2^2/D10^2  : 4.32079E-04    (-0.000140523   0.00285119)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.45 using 59 PHA bins.
# Reduced chi-squared =         0.8810 for     55 degrees of freedom 
# Null hypothesis probability =   7.212307e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.781e-08   2.232e-08
25- 50  1.253e-07   7.047e-08
50-150  3.968e-07   2.135e-07
15-150  5.598e-07   2.908e-07

Peak spectrum fit

Power-law model

Time interval is from    3.576 sec. to    4.576 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23935     ( -0.489686   0.472291 )
Norm@50keV  : 6.40771E-03    ( -0.00186579   0.00186426 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.60 using 59 PHA bins.
# Reduced chi-squared =         0.9930 for     57 degrees of freedom 
# Null hypothesis probability =   4.899129e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.756587 ( -0.227937  0.230702 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.43066e-08 ( -1.97794e-08  2.00788e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    3.576 sec. to    4.576 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 5.50251E-02     ( -2.90969   1.52166 )
Epeak [keV] : 92.0753      (   )
Norm@50keV  : 2.21075E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.37 using 59 PHA bins.
# Reduced chi-squared =         0.9887 for     56 degrees of freedom 
# Null hypothesis probability =   4.986681e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.722948 ( -0.233199  0.236207 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.14719e-08 ( -2.01762e-08  2.07694e-08 ) ergs/cm2

Band function

Time interval is from    3.576 sec. to    4.576 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.135822   ( -0.979319   3.39287 )
beta        : -10.00000    ( 10   20 )
Epeak [keV] : 93.3799      ( -36.1362 555.087 )
Norm@50keV   : 2.07226E-02    ( -0.0207226   0.00614509 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.37 using 59 PHA bins.
# Reduced chi-squared =          1.007 for     55 degrees of freedom 
# Null hypothesis probability =   4.604855e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.740915 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.34294e-08 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 19.8275  (-5.70224  8.38582)
R^2/D10^2   : 3.70361E-02  (-0.0370361   0.0775653)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.27 using 59 PHA bins.
# Reduced chi-squared =         0.9872 for     57 degrees of freedom 
# Null hypothesis probability =   5.025104e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.816e-09   1.817e-09
25- 50  1.395e-08   8.680e-09
50-150  4.060e-08   2.602e-08
15-150  5.736e-08   3.512e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-105.259      -199.363)
Norm        : 3.19225       (-0.939609     0.939609)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.37 using 59 PHA bins.
# Reduced chi-squared =          1.006 for     57 degrees of freedom 
# Null hypothesis probability =   4.614860e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.949e-09   4.760e-09
25- 50  1.529e-08   9.605e-09
50-150  3.354e-08   1.978e-08
15-150  5.678e-08   3.365e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.85794        (-6.80659      19.5951)
R1^2/D10^2  : 0.562864        (-0.591059      -0.591059)
kT2 [keV]   : 24.7011        (-24.6742      -24.6742)
R2^2/D10^2  : 1.53474E-02    (-0.015461   0.055734)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.50 using 59 PHA bins.
# Reduced chi-squared =         0.9910 for     55 degrees of freedom 
# Null hypothesis probability =   4.935259e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.798e-09   3.422e-09
25- 50  1.470e-08   8.115e-09
50-150  4.267e-08   2.770e-08
15-150  6.317e-08   3.337e-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: 1.06018     ( -0.253343   0.24043 )
Norm@50keV  : 3.29543E-03    ( -0.000462276   0.000457476 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.64 using 59 PHA bins.
# Reduced chi-squared =         0.8884 for     57 degrees of freedom 
# Null hypothesis probability =   7.110122e-01
 
Photon flux (15-150 keV)    in 16.56 sec: 0.380926 ( -0.0552738  0.0556265 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.78028e-07 ( -8.18498e-08  8.22953e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.42829     ( -1.02195   0.2833 )
Epeak [keV] : 135.432      ( -999.746 -999.746 )
Norm@50keV  : 2.37551E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.73 using 59 PHA bins.
# Reduced chi-squared =         0.8881 for     56 degrees of freedom 
# Null hypothesis probability =   7.096093e-01
 
Photon flux (15-150 keV)    in 16.56 sec: 0.380816 ( -0.057313  0.055603 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.76778e-07 ( -8.51018e-08  8.33879e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.229155   ( 0.182809   0.182809 )
beta        : -1.21162    ( 1.19632   0.358157 )
Epeak [keV] : 69.5125      ( -68.4041 222.663 )
Norm@50keV   : 1.74056E-02    ( -0.0187357   33.6001 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.98 using 59 PHA bins.
# Reduced chi-squared =         0.9087 for     55 degrees of freedom 
# Null hypothesis probability =   6.664842e-01
 
Photon flux (15-150 keV)    in 16.56 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)  = 1.11e-07
S(50-100 keV) = 2.14e-07

T90 vs. Hardness ratio plot

T90                                   = 14.1519999504089 sec.
Hardness ratio (energy fluence ratio) = 1.92793

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 2.38564
Count Ratio (50-100 keV) / (15-25 keV) = 2.16583

Mask shadow pattern

IMX = -8.708069617040499E-01, IMY = -2.085195981618592E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 8.192000

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:
-239.616000 -2.536000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.6422 -40.6276    4.4  45.8   -5.5   0.8761   2.6    6.8	Vela X-1                      
128.5839 -12.1898    2.3  42.4   36.6   1.8703   5.1 ------	UNKNOWN                       
206.2084  24.8471    2.7  47.0 -178.7   1.3554   4.4 ------	UNKNOWN                       
197.5743 -37.3933    3.5  38.0  -78.4   1.7310   3.4 ------	UNKNOWN

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

Time interval of the image:
-2.536000 14.020000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
135.4348 -40.4739   12.3  45.8   -5.2   0.0694   0.9    6.5	Vela X-1                      
182.6479  42.2951    2.2  51.0  146.9   1.0419   5.4 ------	UNKNOWN                       
193.8758  28.0983    0.9  41.8  166.5   0.8846  12.8 ------	UNKNOWN                       
188.2429  10.3335    2.1  24.6  179.3   0.2313   5.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
123.684600 962.455800
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
173.6944  42.3303    2.9  21.7  131.3   1.7493   4.0 ------	UNKNOWN                       
184.9374  17.5979    2.7  13.3   34.9   1.5952   4.2 ------	UNKNOWN                       
184.6450 -28.1073    3.3  56.9    4.6   7.8236   3.5 ------	UNKNOWN                       
192.1187  53.3117    3.1  25.3  172.4   1.5920   3.7 ------	UNKNOWN                       
243.5305  59.2755    3.7  45.9 -152.3   2.9210   3.2 ------	UNKNOWN                       
223.6670  27.0307    3.7  26.4  -99.9   1.6868   3.1 ------	UNKNOWN

Plot creation:
Sat May 30 23:07:13 EDT 2015