batgrbproduct analysis for trigger=553996

batgrbproduct Analysis for Trigger=553996

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): Sun Jan 12 04:11:43 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger553996
======================================================================

  Trigger: 00553996      Segment: 000

  BAT Trigger Time: 388155401.536   [s; MET]
      Trigger Stop: 388155402.048   [s; MET]
               UTC: 2013-04-20T12:56:31.073560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 183.11962611028   Dec: 54.3864374361318  [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:     12.6491106406735  [ if not an image trigger ]
     Image S/N Ratio:    7.39

  Flight Position:   [ source = BAT ]
    RA: 183.11962611028   Dec: 54.3864374361318  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 183.102289700254   Dec: 54.3750263124822  [deg; J2000]  
        { 12h 12m 24.5s , +54d 22' 30.1" }
         +/- 1.10965383602943 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.437913986257339 [arcmin] (formal 1-sigma fit error)
    SNR: 26.2159005966567
 
  Angular difference between Flight and Ground position is 0.914201 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 12.6359999775887 +/- 5.22695322379476
        Measured from: -2.24800002574921
                   to: 10.3879999518394     [s; relative to TRIGTIME]
     T50: 4.06799989938736 +/- 0.795225816250442
        Measured from: 1.06400001049042
                   to: 5.13199990987778     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.912000000476837     
                   to: 1.91200000047684     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.61599999666214     
                   to: 16.0479999780655     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.261012   0.455856   0.365784   0.074017
           0.023999   0.025635   0.022783   0.018686 [error]
 Peak      0.044047   0.068744   0.060554   0.010679
           0.005799   0.006532   0.006005   0.004473 [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 8.44e-08 1.67e-07 2.57e-07 8.63e-07 7.18e-07 1.37e-06   erg/cm2
              Error 8.98e-09 1.13e-08 2.11e-08 1.48e-07 5.24e-08 1.65e-07   erg/cm2
Peak flux Power-law 3.99e-01 4.55e-01 3.72e-01 5.10e-01 1.41e+00 1.74e+00   ph/cm2/s
              Error 6.82e-02 4.94e-02 4.59e-02 1.27e-01 1.43e-01 1.87e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.82e-08 1.89e-07 2.75e-07 1.97e-07 6.57e-07 7.29e-07   erg/cm2
              Error 1.08e-08 1.45e-08 2.50e-08 9.92e-08 5.62e-08 1.10e-07   erg/cm2
Peak flux Cutoff-PL 3.51e-01 4.90e-01 3.98e-01 2.40e-01 1.38e+00 1.48e+00   ph/cm2/s
              Error 8.11e-02 6.10e-02 5.41e-02 1.80e-01 1.46e-01 2.26e-01   ph/cm2/s
 
Fluence        Band 6.94e-08 1.87e-07 2.76e-07 2.41e-07 6.72e-07 7.76e-07   erg/cm2
              Error 1.06e-08 -------- 2.44e-08 -------- -------- --------   erg/cm2
Peak flux      Band 3.47e-01 4.94e-01 3.94e-01 3.16e-01 1.38e+00 1.55e+00   ph/cm2/s
              Error 8.38e-02 -------- 5.78e-02 -------- 1.46e-01 --------   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.380    0.105    -      -           3.58e-03 2.34e-04   60.980 57
CPL   0.113    0.526      74.3   13.6      1.55e-02 1.00e-02   38.220 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.289    0.164    -      -           1.19e-02 1.21e-03   60.020 57
CPL   0.561    0.736     100.3  224.9      2.76e-02 2.75e-02   56.550 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: 11.584000 sec.
T50 in the 50-300 keV band: 3.776000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   20.664   -4.616   16.048
T90    12.636   -2.248   10.388
T50     4.068    1.064    5.132
Peak    1.000    0.912    1.912

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
  183.1023    54.3750   0.0073     8.6449   162.9842         1.0971865     26.216 TRIG_00553996                 
 
Foreground time interval of the image:
 -4.616  10.165 (delta_t =  14.781 [sec])
Background time interval of the image:
-239.536  -4.616 (delta_t = 234.920 [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

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

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   -4.616 sec. to   16.048 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.37998     ( -0.104414   0.104744 )
Norm@50keV  : 3.58225E-03    ( -0.000234279   0.000233843 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.98 using 59 PHA bins.
# Reduced chi-squared =          1.070 for     57 degrees of freedom 
# Null hypothesis probability =   3.347040e-01
 
Photon flux (15-150 keV)    in 20.66 sec: 0.434311 ( -0.0281718  0.0281895 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.18109e-07 ( -5.21888e-08  5.25638e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -4.616 sec. to   16.048 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.112799     ( -0.557472   0.493662 )
Epeak [keV] : 74.3006      ( -9.72074 17.4363 )
Norm@50keV  : 1.55456E-02    ( -0.00662526   0.0134564 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.22 using 59 PHA bins.
# Reduced chi-squared =         0.6826 for     56 degrees of freedom 
# Null hypothesis probability =   9.667508e-01
 
Photon flux (15-150 keV)    in 20.66 sec: 0.413546 ( -0.029227  0.029229 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.56761e-07 ( -5.56622e-08  5.67633e-08 ) ergs/cm2

Band function

Time interval is from   -4.616 sec. to   16.048 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.112589   ( -0.318047   0.823026 )
beta        : -10.0000    ( 10   7.10543e-15 )
Epeak [keV] : 74.2847      ( -9.71668 17.4543 )
Norm@50keV   : 1.55506E-02    ( -0.00662804   0.0134679 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.22 using 59 PHA bins.
# Reduced chi-squared =         0.6950 for     55 degrees of freedom 
# Null hypothesis probability =   9.585135e-01
 
Photon flux (15-150 keV)    in 20.66 sec: 0.417546 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.71956e-07 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 15.8386  (-1.11807  1.21749)
R^2/D10^2   : 4.35763E-02  (-0.00983884   0.0125449)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.29 using 59 PHA bins.
# Reduced chi-squared =         0.9700 for     57 degrees of freedom 
# Null hypothesis probability =   5.394729e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.680e-08   5.382e-09
25- 50  1.952e-07   1.565e-08
50-150  3.410e-07   4.287e-08
15-150  5.830e-07   4.876e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 1.78784       (-0.115189     0.11519)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.10 using 59 PHA bins.
# Reduced chi-squared =          1.019 for     57 degrees of freedom 
# Null hypothesis probability =   4.343915e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.240e-08   6.849e-09
25- 50  1.778e-07   1.470e-08
50-150  3.898e-07   9.844e-08
15-150  6.600e-07   1.313e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.21464        (-1.71139      2.59677)
R1^2/D10^2  : 0.395534        (-0.256235      0.851894)
kT2 [keV]   : 19.6883        (-2.35291      3.9573)
R2^2/D10^2  : 1.77600E-02    (-0.00960874   0.00890406)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.01 using 59 PHA bins.
# Reduced chi-squared =         0.6547 for     55 degrees of freedom 
# Null hypothesis probability =   9.777599e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.162e-08   3.081e-08
25- 50  1.833e-07   5.154e-08
50-150  3.949e-07   1.094e-07
15-150  6.498e-07   1.626e-07

Peak spectrum fit

Power-law model

Time interval is from    0.912 sec. to    1.912 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.28913     ( -0.163871   0.16438 )
Norm@50keV  : 1.18593E-02    ( -0.00120866   0.00120562 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.02 using 59 PHA bins.
# Reduced chi-squared =          1.053 for     57 degrees of freedom 
# Null hypothesis probability =   3.667624e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.41205 ( -0.142738  0.142796 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.17503e-07 ( -1.35151e-08  1.36479e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.912 sec. to    1.912 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.560832     ( -0.802203   0.670705 )
Epeak [keV] : 100.260      ( -29.6329 420.08 )
Norm@50keV  : 2.76034E-02    ( -0.0146866   0.0403714 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.55 using 59 PHA bins.
# Reduced chi-squared =          1.010 for     56 degrees of freedom 
# Null hypothesis probability =   4.544605e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.38178 ( -0.14648  0.14592 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12001e-07 ( -1.46972e-08  1.4741e-08 ) ergs/cm2

Band function

Time interval is from    0.912 sec. to    1.912 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.462254   ( -0.758289   0.461605 )
beta        : -1.92703    ( 1.93499   0.670622 )
Epeak [keV] : 91.0668      ( -64.6051 349.699 )
Norm@50keV   : 3.15525E-02    ( -0.0192327   186.02 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.45 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     55 degrees of freedom 
# Null hypothesis probability =   4.204322e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.38005 ( 5.61995  -0.1459 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.12033e-07 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 16.5909  (-1.93164  2.23954)
R^2/D10^2   : 0.122486  (-0.0426169   0.0633087)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.27 using 59 PHA bins.
# Reduced chi-squared =          1.215 for     57 degrees of freedom 
# Null hypothesis probability =   1.277700e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.911e-09   1.412e-09
25- 50  2.998e-08   4.420e-09
50-150  5.845e-08   1.176e-08
15-150  9.534e-08   1.350e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 5.74807       (-0.586134     0.586135)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.35 using 59 PHA bins.
# Reduced chi-squared =          1.129 for     57 degrees of freedom 
# Null hypothesis probability =   2.348842e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.440e-08   4.546e-09
25- 50  2.770e-08   8.725e-09
50-150  6.076e-08   3.286e-08
15-150  1.029e-07   4.409e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.83606        (-2.8277      5.51386)
R1^2/D10^2  : 1.10715        (-0.848971      5.96424)
kT2 [keV]   : 23.3569        (-5.23184      33.5906)
R2^2/D10^2  : 3.19594E-02    (-0.0299517   0.0509341)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.84 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     55 degrees of freedom 
# Null hypothesis probability =   4.063867e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.124e-08   6.058e-09
25- 50  2.776e-08   1.281e-08
50-150  7.150e-08   3.850e-08
15-150  1.105e-07   5.539e-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: 1.28990     ( -0.096605   0.0964322 )
Norm@50keV  : 4.73514E-03    ( -0.000281761   0.00028159 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.64 using 59 PHA bins.
# Reduced chi-squared =         0.9938 for     57 degrees of freedom 
# Null hypothesis probability =   4.883742e-01
 
Photon flux (15-150 keV)    in 14.78 sec: 0.563877 ( -0.033854  0.0338782 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.93312e-07 ( -4.60022e-08  4.62481e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.163245     ( -0.492791   0.44145 )
Epeak [keV] : 83.8843      ( -11.8 22.1754 )
Norm@50keV  : 1.69204E-02    ( -0.00649474   0.0119689 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.48 using 59 PHA bins.
# Reduced chi-squared =         0.6157 for     56 degrees of freedom 
# Null hypothesis probability =   9.895278e-01
 
Photon flux (15-150 keV)    in 14.78 sec: 0.539877 ( -0.035109  0.0351 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.43444e-07 ( -4.94288e-08  5.00303e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.163320   ( -0.348691   0.521986 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 83.8751      ( -11.8001 22.186 )
Norm@50keV   : 1.69199E-02    ( -0.00648472   0.0119884 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          34.48 using 59 PHA bins.
# Reduced chi-squared =         0.6269 for     55 degrees of freedom 
# Null hypothesis probability =   9.863081e-01
 
Photon flux (15-150 keV)    in 14.78 sec: 0.546976 ( 6.45302  -0.045364 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.43626e-07 ( -6.43523e-07  -4.97229e-08 ) ergs/cm2

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

S(25-50 keV)  = 1.67e-07
S(50-100 keV) = 2.57e-07

T90 vs. Hardness ratio plot

T90                                   = 12.6359999775887 sec.
Hardness ratio (energy fluence ratio) = 1.53892

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.74649
Count Ratio (50-100 keV) / (15-25 keV) = 1.40141

Mask shadow pattern

IMX = -1.453814624393525E-01, IMY = -4.449136204728642E-02

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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:
-239.536000 -4.616000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4966  35.3106    2.7  44.4   18.8   1.7080   4.3    2.7	Her X-1                       
169.7336  17.2123    2.7  46.3  138.7   3.4858   4.2 ------	UNKNOWN                       
132.9946  33.1649    2.5  48.4 -170.9   1.8080   4.6 ------	UNKNOWN                       
138.8562  61.0434    3.7  27.5 -138.8   0.6250   3.1 ------	UNKNOWN                       
 83.1395  70.5742    3.8  41.8 -104.5   2.5350   3.1 ------	UNKNOWN

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

Time interval of the image:
-4.616000 10.164620
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3480  35.3165    8.5  44.3   19.0   0.1224   1.4    5.6	Her X-1                       
254.7634  28.2780    2.7  50.2   24.3   0.7579   4.3 ------	UNKNOWN                       
230.1737  43.2888    2.4  26.2   35.4   0.2543   4.9 ------	UNKNOWN                       
183.1023  54.3751    0.4   8.6  163.0   1.0972  26.2 ------	UNKNOWN                       
273.1531  57.7483    1.9  38.0  -19.4   0.3380   6.1 ------	UNKNOWN                       
331.4357  73.1352    2.4  44.1  -60.1   0.8025   4.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
38.564590 66.164590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4744  35.2915    3.0  51.6   17.7   0.7916   3.9    3.2	Her X-1                       
154.7370   9.0178    2.5  50.7  154.2   1.1821   4.7 ------	UNKNOWN                       
138.3688  19.0685    2.0  49.0  178.7   0.7170   5.7 ------	UNKNOWN                       
105.9339  42.2956    3.0  50.0 -133.5   0.9709   3.9 ------	UNKNOWN                       
319.5085  72.2628    2.1  49.8  -47.2   1.3055   5.6 ------	UNKNOWN

Plot creation:
Sat May 30 17:05:41 EDT 2015