batgrbproduct analysis for trigger=180977

batgrbproduct Analysis for Trigger=180977

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 18:32:46 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger180977
======================================================================

  Trigger: 00180977      Segment: 000

  BAT Trigger Time: 161240330.816   [s; MET]
      Trigger Stop: 161240331.84   [s; MET]
               UTC: 2006-02-10T04:58:49.809180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 57.7298227424729   Dec: 27.025788071336  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.42
     Image Trigger?:     NO
     Rate S/N Ratio:     27.5862284482674  [ if not an image trigger ]
     Image S/N Ratio:    8.42

  Flight Position:   [ source = BAT ]
    RA: 57.7298227424729   Dec: 27.025788071336  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 57.7255117215847   Dec: 27.0167612671884  [deg; J2000]  
        { 03h 50m 54.1s , +27d 01' 00.3" }
         +/- 1.03448752448959 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.292126827145363 [arcmin] (formal 1-sigma fit error)
    SNR: 28.9789267884414
 
  Angular difference between Flight and Ground position is 0.588588 arcmin
 
  Partial Coding Fraction: 0.4101562    [ including projection effects ]

  Duration
     T90: 288 +/- 151.789327688082
        Measured from: -235.816000014544
                   to: 52.1839999854565     [s; relative to TRIGTIME]
     T50: 48 +/- 16
        Measured from: -59.8160000145435
                   to: -11.8160000145435     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -36.3160000145435     
                   to: -35.3160000145435     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -235.816000014544     
                   to: 132.183999985456     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.649328   4.181723   3.401963   1.171541
           0.188011   0.194513   0.171598   0.150626 [error]
 Peak      0.021079   0.051364   0.054600   0.040182
           0.010735   0.011899   0.011083   0.009735 [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 1.01e-06 1.88e-06 2.70e-06 8.16e-06 7.68e-06 1.37e-05   erg/cm2
              Error 9.87e-08 1.09e-07 1.66e-07 1.12e-06 4.12e-07 1.21e-06   erg/cm2
Peak flux Power-law 2.44e-01 3.51e-01 3.76e-01 7.50e-01 1.20e+00 1.72e+00   ph/cm2/s
              Error 1.37e-01 1.21e-01 8.24e-02 3.69e-01 3.06e-01 3.91e-01   ph/cm2/s
 
Fluence   Cutoff-PL 9.49e-07 1.93e-06 2.77e-06 5.56e-06 7.57e-06 1.12e-05   erg/cm2
              Error 1.24e-07 1.23e-07 1.92e-07 2.17e-06 4.38e-07 2.21e-06   erg/cm2
Peak flux Cutoff-PL 2.49e-01 3.54e-01 3.76e-01 7.33e-01 1.21e+00 1.72e+00   ph/cm2/s
              Error 1.52e-01 1.22e-01 9.64e-02 5.87e-01 3.06e-01 5.12e-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    1.483    0.090    -      -           2.19e-03 1.12e-04   59.700 57
CPL   1.186    0.358     150.1  -45.7      3.02e-03 1.18e-03   57.690 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.900    0.429    -      -           1.05e-02 2.68e-03   56.700 57
CPL   0.903    0.639    9999.2    0.0      1.06e-02 1.71e-02   56.700 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: 75.712000 sec.
T50 in the 50-300 keV band: 34.432000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  368.000 -235.816  132.184
T90   288.000 -235.816   52.184
T50    48.000  -59.816  -11.816
Peak    1.000  -36.316  -35.316

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
   57.7255    27.0168   0.0067    44.1510   178.6306         3.1474948     28.979 TRIG_00180977                 
 
Foreground time interval of the image:
-21.115  15.485 (delta_t =  36.600 [sec])
Background time interval of the image:

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 1.024000

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 1.024000

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 1.024000

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 -235.816 sec. to  132.184 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48280     ( -0.0904218   0.0903864 )
Norm@50keV  : 2.19363E-03    ( -0.000111705   0.000111694 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.70 using 59 PHA bins.
# Reduced chi-squared =          1.047 for     57 degrees of freedom 
# Null hypothesis probability =   3.779412e-01
 
Photon flux (15-150 keV)    in 368 sec: 0.272604 ( -0.0150885  0.0151405 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.68005e-06 ( -4.11744e-07  4.12502e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from -235.816 sec. to  132.184 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.18599     ( -0.38423   0.331217 )
Epeak [keV] : 150.080      ( -58.6749 -150.08 )
Norm@50keV  : 3.01663E-03    ( -0.000872135   0.00148979 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.69 using 59 PHA bins.
# Reduced chi-squared =          1.030 for     56 degrees of freedom 
# Null hypothesis probability =   4.126975e-01
 
Photon flux (15-150 keV)    in 368 sec: 0.268027 ( -0.01597  0.016049 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.56656e-06 ( -4.39686e-07  4.37258e-07 ) ergs/cm2

Band function

Time interval is from -235.816 sec. to  132.184 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.788969   ( 0.85747   4.17533 )
beta        : -1.61040    ( 1.60867   0.160365 )
Epeak [keV] : 73.5050      ( -73.9129 585.321 )
Norm@50keV   : 5.26574E-03    ( -0.00317774   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.35 using 59 PHA bins.
# Reduced chi-squared =          1.043 for     55 degrees of freedom 
# Null hypothesis probability =   3.879357e-01
 
Photon flux (15-150 keV)    in 368 sec: 0.266164 (    ) 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]    : 16.7705  (  )
R^2/D10^2   : 2.08290E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         137.27 using 59 PHA bins.
# Reduced chi-squared =         2.4083 for     57 degrees of freedom 
# Null hypothesis probability =   1.426660e-08
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.407e-07   4.508e-08
25- 50  1.929e-06   1.417e-07
50-150  3.856e-06   3.338e-07
15-150  6.225e-06   3.882e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 1.12741       (-0.0574183     0.0574146)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.98 using 59 PHA bins.
# Reduced chi-squared =          1.070 for     57 degrees of freedom 
# Null hypothesis probability =   3.347932e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.033e-06   6.017e-08
25- 50  1.987e-06   1.205e-07
50-150  4.359e-06   3.183e-07
15-150  7.380e-06   4.416e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.25404        (-1.43676      1.53226)
R1^2/D10^2  : 0.156030        (-0.0639172      0.135105)
kT2 [keV]   : 29.9424        (-5.15728      8.98199)
R2^2/D10^2  : 2.13801E-03    (-0.00126343   0.00216767)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.45 using 59 PHA bins.
# Reduced chi-squared =          1.081 for     55 degrees of freedom 
# Null hypothesis probability =   3.167817e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  8.338e-07   1.754e-07
25- 50  2.017e-06   3.091e-07
50-150  4.705e-06   1.292e-06
15-150  7.555e-06   1.419e-06

Peak spectrum fit

Power-law model

Time interval is from  -36.316 sec. to  -35.316 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.900204     ( -0.457586   0.401352 )
Norm@50keV  : 1.04834E-02    ( -0.00276643   0.00259711 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.70 using 59 PHA bins.
# Reduced chi-squared =         0.9947 for     57 degrees of freedom 
# Null hypothesis probability =   4.863158e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.20321 ( -0.30323  0.309493 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.17644e-07 ( -2.59651e-08  2.59934e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from  -36.316 sec. to  -35.316 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.903490     ( -0.881013   0.396792 )
Epeak [keV] : 9999.16      ( -9999.35 -9999.35 )
Norm@50keV  : 1.05754E-02    ( -0.00256284   0.0317052 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.70 using 59 PHA bins.
# Reduced chi-squared =          1.013 for     56 degrees of freedom 
# Null hypothesis probability =   4.485585e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.20730 ( -0.308407  0.30434 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.17587e-07 ( -2.56983e-08  2.6025e-08 ) ergs/cm2

Band function

Time interval is from  -36.316 sec. to  -35.316 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.769936   ( 0.769936   0.769936 )
beta        : -0.900222    ( -0.401426   0.457296 )
Epeak [keV] : 33.5848      ( -33.5848 -33.5848 )
Norm@50keV   : 1.68515E-02    ( -0.00871308   32210.4 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.70 using 59 PHA bins.
# Reduced chi-squared =          1.031 for     55 degrees of freedom 
# Null hypothesis probability =   4.114399e-01
 
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]    : 28.2937  (-7.68032  14.2676)
R^2/D10^2   : 2.02698E-02  (-0.0140894   0.0348369)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.53 using 59 PHA bins.
# Reduced chi-squared =          1.062 for     57 degrees of freedom 
# Null hypothesis probability =   3.498222e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.630e-09   1.364e-09
25- 50  1.582e-08   6.603e-09
50-150  9.133e-08   4.219e-08
15-150  1.098e-07   4.888e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 5.32034       (-1.25665     1.25622)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.81 using 59 PHA bins.
# Reduced chi-squared =          1.137 for     57 degrees of freedom 
# Null hypothesis probability =   2.229869e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.326e-08   7.955e-09
25- 50  2.551e-08   1.491e-08
50-150  5.595e-08   3.344e-08
15-150  9.473e-08   5.510e-08

Double BB

R1^2/D10^2  : 1.57577E+08        (      )
kT2 [keV]   : 29.2856        (-8.32065      15.6388)
R2^2/D10^2  : 1.80890E-02    (-0.0118027   0.0189885)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.79 using 59 PHA bins.
#Fit statistic : Chi-Squared =          56.19 using 59 PHA bins.
#Fit statistic : Chi-Squared =          55.88 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     55 degrees of freedom 
# Reduced chi-squared =          1.022 for     55 degrees of freedom 
# Reduced chi-squared =          1.016 for     55 degrees of freedom 
# Null hypothesis probability =   4.082479e-01
# Null hypothesis probability =   4.300562e-01
# Null hypothesis probability =   4.415828e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.364e-09   4.754e-09
25- 50  2.114e-08   1.166e-08
50-150  9.120e-08   5.035e-08
15-150  1.197e-07   6.120e-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: 1.55718     ( -0.0926954   0.0929215 )
Norm@50keV  : 6.04973E-03    ( -0.000316263   0.000315816 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.75 using 59 PHA bins.
# Reduced chi-squared =          1.031 for     57 degrees of freedom 
# Null hypothesis probability =   4.112053e-01
 
Photon flux (15-150 keV)    in 36.6 sec: 0.767459 ( -0.0427601  0.0428773 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.08236e-06 ( -1.15069e-07  1.15341e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44008     ( -0.362095   0.198434 )
Epeak [keV] : 254.146      ( -254.146 -254.146 )
Norm@50keV  : 6.88768E-03    ( -0.00111582   0.00327823 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.41 using 59 PHA bins.
# Reduced chi-squared =          1.043 for     56 degrees of freedom 
# Null hypothesis probability =   3.870210e-01
 
Photon flux (15-150 keV)    in 36.6 sec: 0.762556 ( -0.044888  0.044822 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.06965e-06 ( -1.2239e-07  1.21549e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.94482   ( -4.94482   -4.94482 )
beta        : -1.58366    ( -0.099154   0.0975176 )
Epeak [keV] : 21.7717      ( -21.7717 4.12943 )
Norm@50keV   : 1420.42    ( -73.5652   2.96171e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.39 using 59 PHA bins.
# Reduced chi-squared =          1.044 for     55 degrees of freedom 
# Null hypothesis probability =   3.865097e-01
 
Photon flux (15-150 keV)    in 36.6 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)  = 1.88e-06
S(50-100 keV) = 2.70e-06

T90 vs. Hardness ratio plot

T90                                   = 288 sec.
Hardness ratio (energy fluence ratio) = 1.43617

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.57841
Count Ratio (50-100 keV) / (15-25 keV) = 1.28409

Mask shadow pattern

IMX = -9.705164329411058E-01, IMY = -2.319986671718222E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

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:

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

Time interval of the image:
-21.115400 15.484620
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6244  22.0007    1.8  47.9  145.4   1.6389   6.5    1.0	Crab                          
 94.9767  34.5735    2.3  36.5  128.4   0.6465   5.0 ------	UNKNOWN                       
160.9559  62.5085    2.4  31.9   33.9   0.4132   4.8 ------	UNKNOWN                       
 57.7255  27.0168    0.4  44.2  178.6   3.1475  29.0 ------	UNKNOWN                       
 50.0710  52.2664    2.5  21.4 -156.9   0.2614   4.6 ------	UNKNOWN                       
 33.2657  78.2816    2.4  14.2  -61.3   0.2959   4.7 ------	UNKNOWN                       
283.9887  58.1034    2.2  50.7  -44.4   1.6611   5.2 ------	UNKNOWN                       
  3.7843  44.6888    3.0  43.1 -112.1   1.0147   3.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
81.084590 302.238700
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6363  22.0115    0.3  24.1  107.6  10.1075  44.4    0.2	Crab                          
 75.9270  10.7949    2.1  23.6  141.2   1.0297   5.4 ------	UNKNOWN                       
 57.7543  27.0121    1.3   0.0  131.9   1.5268   9.2 ------	UNKNOWN                       
 54.3375 -11.7511    2.5  38.9 -163.5   1.1749   4.7 ------	UNKNOWN                       
354.4429  66.1135    3.0  54.7  -15.1   2.0799   3.8 ------	UNKNOWN                       
 49.3789 -19.8446    2.4  47.6 -158.1   1.6976   4.8 ------	UNKNOWN                       
 42.9917 -20.2067    3.1  49.3 -150.5   1.6177   3.7 ------	UNKNOWN                       
357.5497  42.5218    3.9  50.7  -44.5   3.0284   2.9 ------	UNKNOWN

Plot creation:
Sun May 31 14:16:11 EDT 2015