batgrbproduct analysis for trigger=501520

batgrbproduct Analysis for Trigger=501520

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 21:01:46 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger501520
======================================================================

  Trigger: 00501520      Segment: 000

  BAT Trigger Time: 336096119.808   [s; MET]
      Trigger Stop: 336096123.904   [s; MET]
               UTC: 2011-08-27T00:01:52.506420    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 164.094969657904   Dec: 53.7870142613548  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.19
     Image Trigger?:     NO
     Rate S/N Ratio:     9.59166304662544  [ if not an image trigger ]
     Image S/N Ratio:    7.19

  Flight Position:   [ source = BAT ]
    RA: 164.094969657904   Dec: 53.7870142613548  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 164.056330257319   Dec: 53.8124732529263  [deg; J2000]  
        { 10h 56m 13.5s , +53d 48' 44.9" }
         +/- 2.1400955143657 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.3603282935017 [arcmin] (formal 1-sigma fit error)
    SNR: 10.2581964841422
 
  Angular difference between Flight and Ground position is 2.051393 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 8.51599997282028 +/- 1.10060529766742
        Measured from: -2.52400004863739
                   to: 5.99199992418289     [s; relative to TRIGTIME]
     T50: 4.01599991321564 +/- 2.08068067292671
        Measured from: -0.680000007152557
                   to: 3.33599990606308     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 2.11599999666214     
                   to: 3.11599999666214     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.88400000333786     
                   to: 6.28799998760223     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.065654   0.109603   0.081855   0.017776
           0.013830   0.014425   0.012855   0.011005 [error]
 Peak      0.010292   0.021782   0.012773   0.006678
           0.004632   0.004746   0.004325   0.003671 [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 1.81e-08 3.88e-08 6.54e-08 2.52e-07 1.80e-07 3.74e-07   erg/cm2
              Error 4.94e-09 6.35e-09 1.22e-08 1.06e-07 3.05e-08 1.14e-07   erg/cm2
Peak flux Power-law 1.02e-01 1.18e-01 9.87e-02 1.39e-01 3.68e-01 4.57e-01   ph/cm2/s
              Error 5.37e-02 3.77e-02 3.46e-02 1.09e-01 1.05e-01 1.40e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.67e-08 4.00e-08 6.77e-08 1.53e-07 1.76e-07 2.78e-07   erg/cm2
              Error 6.05e-09 7.25e-09 1.39e-08 1.82e-07 3.23e-08 1.08e-07   erg/cm2
Peak flux Cutoff-PL 1.03e-01 1.19e-01 9.78e-02 1.35e-01 3.69e-01 4.56e-01   ph/cm2/s
              Error 5.69e-02 3.89e-02 3.53e-02 1.37e-01 1.05e-01 1.50e-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    1.247    0.266    -      -           1.96e-03 2.91e-04   81.970 57
CPL   0.880    0.906     166.0    0.0      2.91e-03 4.15e-03   81.570 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.258    0.542    -      -           3.11e-03 8.81e-04   71.910 57
CPL   1.255    0.596    9999.2    0.0      3.12e-03 9.59e-03   71.920 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: 5.888000 sec.
T50 in the 50-300 keV band: 3.456000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    9.172   -2.884    6.288
T90     8.516   -2.524    5.992
T50     4.016   -0.680    3.336
Peak    1.000    2.116    3.116

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
  164.0563    53.8125   0.0187    10.7234  -140.1872         0.2719673     10.258 TRIG_00501520                 
 
Foreground time interval of the image:
 -2.884   6.288 (delta_t =   9.172 [sec])
Background time interval of the image:
-271.907 -258.331 (delta_t =  13.576 [sec])
-239.808  -2.884 (delta_t = 236.924 [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)

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   -2.884 sec. to    6.288 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.24710     ( -0.266254   0.265096 )
Norm@50keV  : 1.95596E-03    ( -0.000290832   0.000290403 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.97 using 59 PHA bins.
# Reduced chi-squared =          1.438 for     57 degrees of freedom 
# Null hypothesis probability =   1.681179e-02
 
Photon flux (15-150 keV)    in 9.172 sec: 0.231229 ( -0.0347969  0.0348797 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.79679e-07 ( -3.02482e-08  3.0703e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -2.884 sec. to    6.288 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.880408     ( -1.20234   0.608936 )
Epeak [keV] : 165.980      ( -165.983 -165.983 )
Norm@50keV  : 2.90732E-03    ( -0.0012095   0.00708645 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.57 using 59 PHA bins.
# Reduced chi-squared =          1.457 for     56 degrees of freedom 
# Null hypothesis probability =   1.449021e-02
 
Photon flux (15-150 keV)    in 9.172 sec: 0.227270 ( -0.03658  0.036363 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.7582e-07 ( -3.23267e-08  3.23432e-08 ) ergs/cm2

Band function

Time interval is from   -2.884 sec. to    6.288 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.852084   ( -0.491163   1.10608 )
beta        : -9.37161    ( 9.37166   19.3717 )
Epeak [keV] : 159.772      ( -84.4546 -159.773 )
Norm@50keV   : 2.96274E-03    ( -0.00128501   0.00812702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.57 using 59 PHA bins.
# Reduced chi-squared =          1.483 for     55 degrees of freedom 
# Null hypothesis probability =   1.149530e-02
 
Photon flux (15-150 keV)    in 9.172 sec: 0.228318 (    ) 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]    : 18.8699  (-3.41604  4.3867)
R^2/D10^2   : 1.27647E-02  (-0.00628075   0.0118837)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          89.09 using 59 PHA bins.
# Reduced chi-squared =          1.563 for     57 degrees of freedom 
# Null hypothesis probability =   4.199191e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.215e-09   2.541e-09
25- 50  3.932e-08   1.159e-08
50-150  1.028e-07   3.211e-08
15-150  1.503e-07   3.903e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 0.948993       (-0.142401     0.142392)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          85.39 using 59 PHA bins.
# Reduced chi-squared =          1.498 for     57 degrees of freedom 
# Null hypothesis probability =   8.800220e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.168e-08   1.220e-08
25- 50  4.171e-08   2.327e-08
50-150  9.147e-08   5.118e-08
15-150  1.549e-07   8.645e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 2.65408        (-1.5543      8.24017)
R1^2/D10^2  : 14.2415        (-14.0464      32548.7)
kT2 [keV]   : 21.5033        (-4.2307      16.6626)
R2^2/D10^2  : 7.96891E-03    (-0.00623221   0.00717933)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          80.64 using 59 PHA bins.
# Reduced chi-squared =          1.466 for     55 degrees of freedom 
# Null hypothesis probability =   1.373677e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.726e-08   7.725e-09
25- 50  3.398e-08   1.152e-08
50-150  1.138e-07   4.128e-08
15-150  1.650e-07   4.610e-08

Peak spectrum fit

Power-law model

Time interval is from    2.116 sec. to    3.116 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25837     ( -0.547065   0.535943 )
Norm@50keV  : 3.10903E-03    ( -0.000885301   0.000877436 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.91 using 59 PHA bins.
# Reduced chi-squared =          1.262 for     57 degrees of freedom 
# Null hypothesis probability =   8.817602e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.368225 ( -0.104726  0.104951 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.10464e-08 ( -1.00165e-08  1.03123e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    2.116 sec. to    3.116 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.25541     ( -0.654281   0.538039 )
Epeak [keV] : 9999.20      ( -9999.28 -9999.28 )
Norm@50keV  : 3.12236E-03    ( -0.000886415   0.0182932 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.92 using 59 PHA bins.
# Reduced chi-squared =          1.284 for     56 degrees of freedom 
# Null hypothesis probability =   7.450353e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.368753 ( -0.105395  0.104294 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.11045e-08 ( -1.02807e-08  1.01249e-08 ) ergs/cm2

Band function

Time interval is from    2.116 sec. to    3.116 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.00598   ( 1.00713   1.00713 )
beta        : -1.25830    ( 1.25835   0.547114 )
Epeak [keV] : 48.0420      ( -47.3399 -47.3399 )
Norm@50keV   : 5.71255E-03    ( -0.00347367   0.536102 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.91 using 59 PHA bins.
# Reduced chi-squared =          1.308 for     55 degrees of freedom 
# Null hypothesis probability =   6.250467e-02
 
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]    : 18.2397  (-7.01677  12.7058)
R^2/D10^2   : 2.18933E-02  (-0.0215296   0.0869041)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          76.40 using 59 PHA bins.
# Reduced chi-squared =          1.340 for     57 degrees of freedom 
# Null hypothesis probability =   4.409526e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.452e-09   9.420e-10
25- 50  6.782e-09   4.204e-09
50-150  1.643e-08   1.139e-08
15-150  2.467e-08   1.548e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (-114.397      -199.363)
Norm        : 1.50260       (-0.428311     0.428311)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.01 using 59 PHA bins.
# Reduced chi-squared =          1.281 for     57 degrees of freedom 
# Null hypothesis probability =   7.496230e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.742e-09   2.316e-09
25- 50  7.197e-09   4.403e-09
50-150  1.578e-08   9.630e-09
15-150  2.672e-08   1.633e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.22444        (-5.90466      5.60987)
R1^2/D10^2  : 0.341991        (-0.313015      0.618482)
kT2 [keV]   : 38.5028        (-38.5383      -38.5387)
R2^2/D10^2  : 1.79393E-03    (-0.00170984   0.022545)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          71.82 using 59 PHA bins.
# Reduced chi-squared =          1.306 for     55 degrees of freedom 
# Null hypothesis probability =   6.341991e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.312e-09   2.189e-09
25- 50  6.683e-09   3.970e-09
50-150  2.246e-08   1.245e-08
15-150  3.246e-08   1.749e-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: 1.24710     ( -0.266254   0.265096 )
Norm@50keV  : 1.95596E-03    ( -0.000290832   0.000290403 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.97 using 59 PHA bins.
# Reduced chi-squared =          1.438 for     57 degrees of freedom 
# Null hypothesis probability =   1.681179e-02
 
Photon flux (15-150 keV)    in 9.172 sec: 0.231229 ( -0.0347969  0.0348797 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.79679e-07 ( -3.02482e-08  3.0703e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.880408     ( -1.20234   0.608936 )
Epeak [keV] : 165.980      ( -165.983 -165.983 )
Norm@50keV  : 2.90732E-03    ( -0.0012095   0.00708645 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.57 using 59 PHA bins.
# Reduced chi-squared =          1.457 for     56 degrees of freedom 
# Null hypothesis probability =   1.449021e-02
 
Photon flux (15-150 keV)    in 9.172 sec: 0.227270 ( -0.03658  0.036363 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.7582e-07 ( -3.23267e-08  3.23432e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.852084   ( -0.491157   1.10608 )
beta        : -9.37161    ( 9.37166   19.3717 )
Epeak [keV] : 159.772      ( -84.4546 -159.773 )
Norm@50keV   : 2.96274E-03    ( -0.00128501   0.00812702 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          81.57 using 59 PHA bins.
# Reduced chi-squared =          1.483 for     55 degrees of freedom 
# Null hypothesis probability =   1.149530e-02
 
Photon flux (15-150 keV)    in 9.172 sec: 0.228318 (    ) 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)  = 3.88e-08
S(50-100 keV) = 6.54e-08

T90 vs. Hardness ratio plot

T90                                   = 8.51599997282028 sec.
Hardness ratio (energy fluence ratio) = 1.68557

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.6694
Count Ratio (50-100 keV) / (15-25 keV) = 1.24676

Mask shadow pattern

IMX = -1.454662102788873E-01, IMY = 1.212528985929966E-01

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:
-271.907400 -258.330900
-239.808000 -2.884000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 64.5273  64.5635    2.6  37.0   69.5   1.8963   4.4 ------	UNKNOWN                       
192.6302  23.0294    3.1  48.0 -129.0   2.9032   3.8 ------	UNKNOWN

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

Time interval of the image:
-2.884000 6.288000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 77.5843  39.4877    2.6  46.6   32.3   0.3931   4.5 ------	UNKNOWN                       
178.4376  63.0915    2.1  16.4  172.9   0.1403   5.4 ------	UNKNOWN                       
164.0575  53.8124    1.1  10.7 -140.2   0.2718  10.2 ------	UNKNOWN                       
208.6742  33.8851    2.1  47.4 -153.1   0.3351   5.5 ------	UNKNOWN                       
188.5960  22.8092    2.2  46.3 -124.5   0.6591   5.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
205.692600 721.792600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.6116  35.2776   16.9  22.4  155.6   0.1964   0.7    8.5	Her X-1                       
299.6518  35.2068    1.6  39.0   86.6   8.5468   7.4    3.0	Cyg X-1                       
308.1682  40.8991    4.2  39.3   72.6   3.0044   2.7    4.1	Cyg X-3                       
236.8658   4.7634    3.2  54.0 -179.3   3.7297   3.6 ------	UNKNOWN                       
 75.7889  63.9418    4.2  58.4  -19.4   4.5764   2.8 ------	UNKNOWN                       
213.9598  20.3160    3.2  46.1 -145.1   2.4374   3.7 ------	UNKNOWN                       
201.9611  24.6349    2.1  47.9 -129.0   6.4333   5.5 ------	UNKNOWN

Plot creation:
Sat May 30 21:38:56 EDT 2015