batgrbproduct analysis for trigger=623158

batgrbproduct Analysis for Trigger=623158

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 26 10:56:01 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger623158
======================================================================

  Trigger: 00623158      Segment: 000

  BAT Trigger Time: 441786546.692   [s; MET]
      Trigger Stop: 441786546.756   [s; MET]
               UTC: 2015-01-01T06:28:53.699400    [includes UTCF correction] 
       Where From?: (*SHORT BURST*) TDRSS scaled map message

  BAT 
    RA: 312.631006525829   Dec: 36.727689408524  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.46
     Image Trigger?:     NO
     Rate S/N Ratio:     19.4422220952236  [ if not an image trigger ]
     Image S/N Ratio:    7.46

  Flight Position:   [ source = BAT ]
    RA: 312.631006525829   Dec: 36.727689408524  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 312.589429830046   Dec: 36.6686981122609  [deg; J2000]  
        { 20h 50m 21.5s , +36d 40' 07.3" }
         +/- 2.43699652265558 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.534244329743 [arcmin] (formal 1-sigma fit error)
    SNR: 8.52056726461872
 
  Angular difference between Flight and Ground position is 4.065530 arcmin
 
  Partial Coding Fraction: 0.9140625    [ including projection effects ]

  Duration
     T90: 0.059999942779541 +/- 0.0113137314268704
        Measured from: 0.00400000810623169
                   to: 0.0639999508857727     [s; relative to TRIGTIME]
     T50: 0.031999945640564 +/- 0.0178885800721685
        Measured from: 0.0200000405311584
                   to: 0.0519999861717224     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.46399998664856     
                   to: 0.53600001335144     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 0.0680000185966492     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.006769   0.016512   0.015015   0.001700
           0.002154   0.002727   0.002806   0.002121 [error]
 Peak     -0.005831   0.026621   0.014870   0.011075
           0.006811   0.007201   0.006211   0.005533 [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 1.94e-09 8.97e-10 2.61e-10 0.00e+00 3.17e-09 3.22e-09   erg/cm2
              Error -------- -------- -------- 3.11e-10 -------- --------   erg/cm2
Peak flux Power-law 5.83e-02 8.70e-02 9.71e-02 2.05e-01 3.04e-01 4.46e-01   ph/cm2/s
              Error 6.20e-02 5.39e-02 4.67e-02 2.47e-01 1.49e-01 2.38e-01   ph/cm2/s
 
Fluence   Cutoff-PL 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux Cutoff-PL 9.08e-03 1.34e-01 9.34e-02 5.73e-04 2.37e-01 2.37e-01   ph/cm2/s
              Error 4.08e-02 8.08e-02 6.75e-02 7.41e-02 1.30e-01 1.41e-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    3.798    0.000    -      -           2.44e-03 1.58e-03   97.490 57
CPL  -7.190    0.000      53.4    6.1      3.53e+02 3.67e+03   54.020 56
 
The chi2 of BB fit is -------- which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    0.849    0.818    -      -           2.66e-03 1.33e-03   53.240 57
CPL  -9.549    0.000      52.2   97.3      3.83e+02 3.34e+03   50.040 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    0.068    0.000    0.068
T90     0.060    0.004    0.064
T50     0.032    0.020    0.052
Peak    1.000   -0.464    0.536

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
  312.5894    36.6687   0.0225    13.9445  -104.5282         0.0438136      8.521 TRIG_00623158                 
 
Foreground time interval of the image:
  0.000   0.068 (delta_t =   0.068 [sec])
Background time interval of the image:
-126.591   0.000 (delta_t = 126.591 [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 0.064000

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 0.064000

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 0.064000

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    0.000 sec. to    0.068 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.79848     (     )
Norm@50keV  : 2.44386E-03    ( -0.00160549   0.00155959 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          97.49 using 59 PHA bins.
# Reduced chi-squared =          1.710 for     57 degrees of freedom 
# Null hypothesis probability =   6.744175e-04
 
Photon flux (15-150 keV)    in 0.068 sec: 0.0 1.26668 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.000 sec. to    0.068 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -7.18987     (     )
Epeak [keV] : 53.4383      ( -6.36957 5.77637 )
Norm@50keV  : 353.235    ( -362.539   6983.75 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.02 using 59 PHA bins.
# Reduced chi-squared =         0.9647 for     56 degrees of freedom 
# Null hypothesis probability =   5.501354e-01
 
Photon flux (15-150 keV)    in 0.068 sec: 0.0 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

Time interval is from    0.000 sec. to    0.068 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.983950   (     )
beta        : -2.50000    (     )
Epeak [keV] : 80.0000      (   )
Norm@50keV   : 0.0    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         112.41 using 59 PHA bins.
# Reduced chi-squared =         2.0438 for     55 degrees of freedom 
# Null hypothesis probability =   8.043248e-06
 
Photon flux (15-150 keV)    in 0.068 sec: 0.0 (    ) 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]    : 10.5827  (-1.16085  0.806929)
R^2/D10^2   : 1.37530  (-0.485067   0.686855)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.16 using 59 PHA bins.
# Reduced chi-squared =          1.126 for     57 degrees of freedom 
# Null hypothesis probability =   2.399479e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.169e-09   6.565e-10
25- 50  5.831e-09   1.456e-09
50-150  3.577e-09   1.360e-09
15-150  1.158e-08   3.009e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 24.1857       (-5.58884      5.03733)
Norm        : 21.7235       (-7.60388     9.35233)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          84.04 using 59 PHA bins.
# Reduced chi-squared =          1.474 for     57 degrees of freedom 
# Null hypothesis probability =   1.140970e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.647e-09   9.207e-10
25- 50  2.655e-09   9.561e-10
50-150  1.075e-09   6.635e-10
15-150  6.377e-09   2.223e-09

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 0.100923        (-0.100923      -0.100923)
R1^2/D10^2  : 396.027        (-396.704      -396.704)
kT2 [keV]   : 10.5767        (-1.07154      0.895247)
R2^2/D10^2  : 1.37781    (-0.478706   0.692702)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.16 using 59 PHA bins.
# Reduced chi-squared =          1.167 for     55 degrees of freedom 
# Null hypothesis probability =   1.861251e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

Peak spectrum fit

Power-law model

Time interval is from   -0.464 sec. to    0.536 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.849170     ( -0.916926   0.71902 )
Norm@50keV  : 2.65570E-03    ( -0.00135904   0.00131039 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.24 using 59 PHA bins.
# Reduced chi-squared =         0.9341 for     57 degrees of freedom 
# Null hypothesis probability =   6.168036e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.304359 ( -0.146046  0.152165 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.04532e-08 ( -1.47216e-08  1.50627e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.464 sec. to    0.536 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -9.54949     (     )
Epeak [keV] : 52.1774      ( -10.1812 184.448 )
Norm@50keV  : 383.207    ( -364.199   6316.29 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.04 using 59 PHA bins.
# Reduced chi-squared =         0.8936 for     56 degrees of freedom 
# Null hypothesis probability =   6.987712e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.236562 ( -0.100323  0.1601 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.80743e-08 ( -7.793e-09  1.84648e-08 ) ergs/cm2

Band function

Time interval is from   -0.464 sec. to    0.536 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.20115   ( -1.80017   3.30915 )
beta        : -10.00000    ( 10   10 )
Epeak [keV] : 61.8212      ( -17.6171 590.319 )
Norm@50keV   : 0.309568    ( -0.132551   1.6289 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.66 using 59 PHA bins.
# Reduced chi-squared =         0.9211 for     55 degrees of freedom 
# Null hypothesis probability =   6.409559e-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]    : 18.4800  (-6.47275  17.5645)
R^2/D10^2   : 2.13491E-02  (-0.0213492   0.0690513)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.34 using 59 PHA bins.
# Reduced chi-squared =         0.9007 for     57 degrees of freedom 
# Null hypothesis probability =   6.865011e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.447e-09   9.940e-10
25- 50  6.824e-09   4.392e-09
50-150  1.702e-08   1.181e-08
15-150  2.530e-08   1.627e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 1.07301       (-0.662976     0.663006)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.61 using 59 PHA bins.
# Reduced chi-squared =         0.9756 for     57 degrees of freedom 
# Null hypothesis probability =   5.273874e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 0.179804        (26.3199      -0.179804)
R1^2/D10^2  : 74.2651        (-74.2651      -74.2651)
kT2 [keV]   : 18.4799        (-6.47275      17.5646)
R2^2/D10^2  : 2.13492E-02    (-0.0187995   0.0688643)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.34 using 59 PHA bins.
# Reduced chi-squared =         0.9334 for     55 degrees of freedom 
# Null hypothesis probability =   6.153449e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

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: 3.79848     (     )
Norm@50keV  : 2.44386E-03    ( -0.00160549   0.00155959 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          97.49 using 59 PHA bins.
# Reduced chi-squared =          1.710 for     57 degrees of freedom 
# Null hypothesis probability =   6.744175e-04
 
Photon flux (15-150 keV)    in 0.068 sec: 0.0 1.26668 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -7.18987     (     )
Epeak [keV] : 53.4383      ( -6.36957 5.77637 )
Norm@50keV  : 353.235    ( -362.539   5382.79 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.02 using 59 PHA bins.
# Reduced chi-squared =         0.9647 for     56 degrees of freedom 
# Null hypothesis probability =   5.501354e-01
 
Photon flux (15-150 keV)    in 0.068 sec: 0.0 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.983950   (     )
beta        : -2.50000    (     )
Epeak [keV] : 80.0000      (   )
Norm@50keV   : 0.0    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         112.41 using 59 PHA bins.
# Reduced chi-squared =         2.0438 for     55 degrees of freedom 
# Null hypothesis probability =   8.043248e-06
 
Photon flux (15-150 keV)    in 0.068 sec: 0.0 (    ) 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)  = 8.97e-10
S(50-100 keV) = 2.61e-10

T90 vs. Hardness ratio plot

T90                                   = 0.059999942779541 sec.
Hardness ratio (energy fluence ratio) = 0.29097

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 2.43936
Count Ratio (50-100 keV) / (15-25 keV) = 2.2182

Mask shadow pattern

IMX = -6.228787252569472E-02, IMY = 2.403604035610543E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.064000

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:
-126.591400 0.000000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3144  35.2505    4.5  48.7  -30.1  -0.8338  -2.6    8.9	Her X-1                       
299.5788  35.1937    0.9  20.6  -75.8   2.2278  12.7    0.7	Cyg X-1                       
308.1179  40.9789    2.0  11.9  -81.3   0.8808   5.6    1.6	Cyg X-3                       
326.4414  38.3258    0.0  12.3 -154.5   0.2138   1.4   12.7	Cyg X-2                       
251.3819  50.3123    2.7  42.3  -10.6   0.9179   4.3 ------	UNKNOWN                       
315.2856   4.1773    2.7  45.6 -122.7   2.9204   4.3 ------	UNKNOWN

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

Time interval of the image:
0.000000 0.068000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3378  35.2415   79.1  48.7  -30.1   0.0015   0.1    8.4	Her X-1                       
299.4192  35.1920    4.7  20.7  -75.5   0.0142   2.5    8.4	Cyg X-1                       
307.8430  40.8981    0.0  12.1  -80.8   0.0101   2.1   12.5	Cyg X-3                       
326.1259  38.1541    4.5  12.4 -153.1  -0.0126  -2.6   10.3	Cyg X-2                       
312.5893  36.6688    1.4  13.9 -104.5   0.0438   8.5 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
45.008590 962.468000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.5153  35.4489    9.6  46.2  -14.4   1.3402   1.2    7.0	Her X-1                       
288.8030  10.9224    1.3  33.6  -75.3  11.5457   9.0    1.4	GRS 1915+105                  
299.5985  35.2040    0.5  10.7  -35.6  15.8463  24.9    0.4	Cyg X-1                       
308.1270  40.9636    0.8   5.5   20.5   8.0718  13.7    1.0	Cyg X-3                       
326.0537  38.2055   12.3  10.7  137.0  -0.6121  -0.9    8.9	Cyg X-2                       
349.8618  16.6127    3.0  38.5  170.3   4.2425   3.9 ------	UNKNOWN                       
252.7736  45.2190    2.4  44.9   -0.7   5.1426   4.8 ------	UNKNOWN                       
317.8324  15.1451    2.3  22.1 -134.6   3.1364   5.1 ------	UNKNOWN                       
264.5164  20.8621    3.4  44.5  -38.3   3.8242   3.4 ------	UNKNOWN                       
343.2530 -13.5566    4.5  58.0 -156.8  11.4962   2.6 ------	UNKNOWN                       
311.9059   0.1435    3.6  36.6 -119.9   3.1364   3.2 ------	UNKNOWN                       
246.1302  21.7507    4.4  58.8  -26.1  11.1074   2.6 ------	UNKNOWN                       
267.5494  11.5206    2.7  47.6  -51.2  12.0001   4.2 ------	UNKNOWN

Plot creation:
Thu May 28 13:46:14 EDT 2015