batgrbproduct analysis for trigger=516571

batgrbproduct Analysis for Trigger=516571

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 06:15:46 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger516571
======================================================================

  Trigger: 00516571      Segment: 000

  BAT Trigger Time: 352218919.104   [s; MET]
      Trigger Stop: 352218919.36   [s; MET]
               UTC: 2012-02-29T14:35:11.161400    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 20.0351563795243   Dec: -35.8075827980141  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.66
     Image Trigger?:     NO
     Rate S/N Ratio:     19.6977156035922  [ if not an image trigger ]
     Image S/N Ratio:    9.66

  Flight Position:   [ source = BAT ]
    RA: 20.0351563795243   Dec: -35.8075827980141  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 20.0407969220775   Dec: -35.7984398286839  [deg; J2000]  
        { 01h 20m 09.8s , -35d 47' 54.4" }
         +/- 1.86735064570347 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.981412447146205 [arcmin] (formal 1-sigma fit error)
    SNR: 12.4638680486458
 
  Angular difference between Flight and Ground position is 0.613414 arcmin
 
  Partial Coding Fraction: 0.859375    [ including projection effects ]

  Duration
     T90: 0.235999941825867 +/- 0.0368781685195268
        Measured from: 0.0160000324249268
                   to: 0.251999974250793     [s; relative to TRIGTIME]
     T50: 0.167999923229218 +/- 0.0199999928474746
        Measured from: 0.0440000295639038
                   to: 0.211999952793121     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.367999970912933     
                   to: 0.632000029087067     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0079999566078186     
                   to: 0.26800000667572     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.015271   0.025555   0.019528   0.007692
           0.003012   0.003358   0.003191   0.002473 [error]
 Peak      0.017321   0.026563   0.019690   0.006567
           0.005158   0.005509   0.005060   0.004008 [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 4.54e-09 9.32e-09 1.49e-08 5.35e-08 4.14e-08 8.23e-08   erg/cm2
              Error 1.15e-09 1.51e-09 2.89e-09 2.17e-08 7.25e-09 2.40e-08   erg/cm2
Peak flux Power-law 1.52e-01 1.69e-01 1.34e-01 1.76e-01 5.19e-01 6.31e-01   ph/cm2/s
              Error 6.39e-02 4.52e-02 3.99e-02 1.08e-01 1.29e-01 1.62e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.91e-09 1.02e-08 1.61e-08 1.90e-08 3.97e-08 4.93e-08   erg/cm2
              Error 1.33e-09 1.85e-09 3.39e-09 1.98e-08 7.55e-09 2.62e-08   erg/cm2
Peak flux Cutoff-PL 1.35e-01 1.78e-01 1.42e-01 9.50e-02 5.09e-01 5.51e-01   ph/cm2/s
              Error 7.28e-02 5.26e-02 4.60e-02 1.43e-01 1.31e-01 1.89e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.35e-01 1.76e-01 1.43e-01 1.05e-01 5.10e-01 5.59e-01   ph/cm2/s
              Error -------- -------- -------- -------- 1.29e-01 --------   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.319    0.248    -      -           1.53e-02 2.38e-03   68.130 57
CPL   0.475    0.989      94.1  -31.1      3.98e-02 5.78e-02   65.460 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.331    0.413    -      -           4.33e-03 1.07e-03   63.400 57
CPL   0.725    1.374     108.9    0.0      8.63e-03 2.97e-02   62.820 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: 0.192000 sec.
T50 in the 50-300 keV band: 0.192000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.276   -0.008    0.268
T90     0.236    0.016    0.252
T50     0.168    0.044    0.212
Peak    1.000   -0.368    0.632

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
   20.0408   -35.7984   0.0155    25.8886  -150.2481         0.0733313     12.464 TRIG_00516571                 
 
Foreground time interval of the image:
 -0.008   0.268 (delta_t =   0.276 [sec])
Background time interval of the image:
-127.603  -0.008 (delta_t = 127.595 [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 0.256000

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 0.256000

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 0.256000

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   -0.008 sec. to    0.268 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.31937     ( -0.246593   0.24902 )
Norm@50keV  : 1.52657E-02    ( -0.00238304   0.00237392 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.13 using 59 PHA bins.
# Reduced chi-squared =          1.195 for     57 degrees of freedom 
# Null hypothesis probability =   1.485366e-01
 
Photon flux (15-150 keV)    in 0.276 sec: 1.82790 ( -0.282938  0.28317 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.1442e-08 ( -7.19827e-09  7.30169e-09 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.008 sec. to    0.268 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.474534     ( -1.09226   0.886121 )
Epeak [keV] : 94.0826      ( -31.9515 -94.1023 )
Norm@50keV  : 3.97923E-02    ( -0.0246046   0.0909074 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.46 using 59 PHA bins.
# Reduced chi-squared =          1.169 for     56 degrees of freedom 
# Null hypothesis probability =   1.813890e-01
 
Photon flux (15-150 keV)    in 0.276 sec: 1.78555 ( -0.28568  0.28628 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.97153e-08 ( -7.49036e-09  7.60076e-09 ) ergs/cm2

Band function

Time interval is from   -0.008 sec. to    0.268 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.479708   ( -0.484961   1.27256 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 94.3565      ( -30.4786 250.483 )
Norm@50keV   : 3.95571E-02    ( -0.0245921   0.0910215 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.46 using 59 PHA bins.
# Reduced chi-squared =          1.190 for     55 degrees of freedom 
# Null hypothesis probability =   1.579622e-01
 
Photon flux (15-150 keV)    in 0.276 sec: 1.80128 ( 5.19872  -0.27513 ) 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]    : 17.4089  (-3.34319  3.99292)
R^2/D10^2   : 0.134540  (-0.0670572   0.139442)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.56 using 59 PHA bins.
# Reduced chi-squared =          1.273 for     57 degrees of freedom 
# Null hypothesis probability =   8.015927e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.277e-09   7.619e-10
25- 50  1.026e-08   2.651e-09
50-150  2.237e-08   6.890e-09
15-150  3.491e-08   8.095e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 7.52754       (-1.16003     1.16)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.01 using 59 PHA bins.
# Reduced chi-squared =          1.211 for     57 degrees of freedom 
# Null hypothesis probability =   1.322543e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.174e-09   2.985e-09
25- 50  9.952e-09   5.572e-09
50-150  2.183e-08   1.246e-08
15-150  3.695e-08   2.129e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.56398        (-2.69336      3.41441)
R1^2/D10^2  : 1.20357        (-0.850582      3.99257)
kT2 [keV]   : 26.4501        (-7.0265      14.9322)
R2^2/D10^2  : 2.61127E-02    (-0.0205252   0.0547456)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.34 using 59 PHA bins.
# Reduced chi-squared =          1.152 for     55 degrees of freedom 
# Null hypothesis probability =   2.057447e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.135e-09   2.412e-09
25- 50  1.016e-08   5.374e-09
50-150  2.658e-08   1.518e-08
15-150  4.087e-08   2.110e-08

Peak spectrum fit

Power-law model

Time interval is from   -0.368 sec. to    0.632 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.33123     ( -0.413564   0.413332 )
Norm@50keV  : 4.32827E-03    ( -0.00107309   0.00106774 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.40 using 59 PHA bins.
# Reduced chi-squared =          1.112 for     57 degrees of freedom 
# Null hypothesis probability =   2.609558e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.519447 ( -0.128778  0.12911 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.24553e-08 ( -1.15747e-08  1.18398e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.368 sec. to    0.632 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.724574     ( -1.7834   0.964614 )
Epeak [keV] : 108.890      ( -109.208 -109.208 )
Norm@50keV  : 8.63180E-03    ( -0.00520763   0.0542682 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.82 using 59 PHA bins.
# Reduced chi-squared =          1.122 for     56 degrees of freedom 
# Null hypothesis probability =   2.473899e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.509061 ( -0.130639  0.131074 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.09715e-08 ( -1.21052e-08  1.23659e-08 ) ergs/cm2

Band function

Time interval is from   -0.368 sec. to    0.632 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.402936   ( -0.72428   1.86409 )
beta        : -1.60546    ( 9.37167   19.3717 )
Epeak [keV] : 50.7632      ( -63.0409 -118.363 )
Norm@50keV   : 4.87316E-02    ( -0.0485016   71.0655 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.56 using 59 PHA bins.
# Reduced chi-squared =          1.138 for     55 degrees of freedom 
# Null hypothesis probability =   2.255719e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.510237 ( 6.48976  -0.129607 ) 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]    : 17.3525  (-5.87207  8.08582)
R^2/D10^2   : 3.73458E-02  (-0.0265635   0.113437)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.64 using 59 PHA bins.
# Reduced chi-squared =          1.169 for     57 degrees of freedom 
# Null hypothesis probability =   1.792887e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.277e-09   1.210e-09
25- 50  1.024e-08   5.566e-09
50-150  2.215e-08   1.279e-08
15-150  3.467e-08   1.747e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-104.283      -199.363)
Norm        : 2.14673       (-0.527239     0.527235)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.79 using 59 PHA bins.
# Reduced chi-squared =          1.119 for     57 degrees of freedom 
# Null hypothesis probability =   2.499586e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.345e-09   3.212e-09
25- 50  1.028e-08   5.970e-09
50-150  2.255e-08   1.351e-08
15-150  3.818e-08   2.285e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.77747        (-3.75623      5.23842)
R1^2/D10^2  : 0.354134        (-0.296268      3.0902)
kT2 [keV]   : 29.6711        (-25.6452      65.3536)
R2^2/D10^2  : 4.90323E-03    (-0.00468457   0.0250086)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.58 using 59 PHA bins.
# Reduced chi-squared =          1.120 for     55 degrees of freedom 
# Null hypothesis probability =   2.523934e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.470e-09   2.653e-09
25- 50  1.049e-08   5.690e-09
50-150  2.758e-08   1.547e-08
15-150  4.254e-08   2.231e-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: 1.31937     ( -0.246593   0.24902 )
Norm@50keV  : 1.52657E-02    ( -0.00238304   0.00237392 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          68.13 using 59 PHA bins.
# Reduced chi-squared =          1.195 for     57 degrees of freedom 
# Null hypothesis probability =   1.485366e-01
 
Photon flux (15-150 keV)    in 0.276 sec: 1.82790 ( -0.282938  0.28317 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.1442e-08 ( -7.19827e-09  7.30169e-09 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.474534     ( -1.09226   0.886121 )
Epeak [keV] : 94.0826      ( -31.9515 -94.1023 )
Norm@50keV  : 3.97923E-02    ( -0.0246046   0.0909074 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.46 using 59 PHA bins.
# Reduced chi-squared =          1.169 for     56 degrees of freedom 
# Null hypothesis probability =   1.813890e-01
 
Photon flux (15-150 keV)    in 0.276 sec: 1.78555 ( -0.28568  0.28628 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.97153e-08 ( -7.49036e-09  7.60076e-09 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.479708   ( -0.484961   1.27256 )
beta        : -10.0000    ( 10   1.77636e-15 )
Epeak [keV] : 94.3565      ( -30.4786 250.482 )
Norm@50keV   : 3.95571E-02    ( -0.0245921   0.0910215 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.46 using 59 PHA bins.
# Reduced chi-squared =          1.190 for     55 degrees of freedom 
# Null hypothesis probability =   1.579622e-01
 
Photon flux (15-150 keV)    in 0.276 sec: 1.80128 ( 5.19872  -0.27513 ) 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)  = 9.32e-09
S(50-100 keV) = 1.49e-08

T90 vs. Hardness ratio plot

T90                                   = 0.235999941825867 sec.
Hardness ratio (energy fluence ratio) = 1.59871

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.67343
Count Ratio (50-100 keV) / (15-25 keV) = 1.27876

Mask shadow pattern

IMX = -4.213536167508830E-01, IMY = 2.408422241329696E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.256000

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:
-127.603410 -0.008000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 82.8395 -29.4367    2.5  39.9  103.1   2.0733   4.6 ------	UNKNOWN

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

Time interval of the image:
-0.008000 0.268000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 20.0408 -35.7984    0.9  25.9 -150.2   0.0733  12.5 ------	UNKNOWN                       
  2.3588 -59.7460    2.3  50.4 -167.7   0.0691   5.0 ------	UNKNOWN                       
 34.5881  35.6914    2.5  53.8  -18.3   0.0748   4.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
-239.104000 962.947400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 69.2734 -62.6067    2.4  49.0  151.3   9.9071   4.9 ------	UNKNOWN                       
 54.3460  -9.0377    2.6  15.6   46.1   2.2720   4.4 ------	UNKNOWN                       
 38.9553 -56.1350    2.7  38.4  170.0   3.5608   4.4 ------	UNKNOWN                       
 58.0458  35.1919    2.9  55.3    5.1   8.8750   4.1 ------	UNKNOWN                       
 19.3257 -62.2979    2.9  47.1 -178.3   4.3293   4.0 ------	UNKNOWN                       
 37.7293   5.6590    3.4  23.6  -20.0   1.5624   3.4 ------	UNKNOWN                       
 41.2178  34.2118    3.0  51.9  -11.6   5.2831   3.9 ------	UNKNOWN                       
342.0948 -55.3233    4.0  58.0 -156.8  12.6343   2.9 ------	UNKNOWN                       
349.9963 -31.7930    3.2  47.9 -129.0   8.9488   3.6 ------	UNKNOWN

Plot creation:
Sat May 30 20:12:15 EDT 2015