batgrbproduct analysis for trigger=145754

batgrbproduct Analysis for Trigger=145754

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done of the amount of data for this trigger downloaded to date.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
4) This page will be updated for up to 10 downlinks after the trigger.

Special note: Due to the low partial coding fraction, the refined position can only be found using the DETECTION mask. Therefore, the refined position and the mask shadow pattern shown here are from analyses with DETECTION mask, everything else uses the FLUX mask.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Dec 18 20:54:53 EST 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger145754
======================================================================

  Trigger: 00145754      Segment: 000

  BAT Trigger Time: 142949237.248   [s; MET]
      Trigger Stop: 142949249.408   [s; MET]
               UTC: 2005-07-13T12:07:17.628280    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 307.843067664678   Dec: 60.9200340587601  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.04
     Image Trigger?:     NO
     Rate S/N Ratio:     30.3973683071413  [ if not an image trigger ]
     Image S/N Ratio:    7.04

  Flight Position:   [ source = BAT ]
    RA: 307.843067664678   Dec: 60.9200340587601  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 307.8955840078   Dec: 60.946748122046  [deg; J2000]  
        { 20h 31m 34.9s , +60d 56' 48.3" }
         +/- 3.03535489336488 [arcmin] (estimated 90% radius based on SNR)
         +/- 2.00965393981825 [arcmin] (formal 1-sigma fit error)
    SNR: 6.22655315468263
    Note: The refined position is found by using the DETECTION mask.
 
  Angular difference between Flight and Ground position is 2.216426 arcmin
 
  Partial Coding Fraction: 0.04248047    [ including projection effects ]

  Duration
     T90: 121.695999950171 +/- 54.0234053055711
        Measured from: 2.08000001311302
                   to: 123.775999963284     [s; relative to TRIGTIME]
     T50: 35.8239999711514 +/- 14.1755485266269
        Measured from: 10.9600000083447
                   to: 46.783999979496     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 8.86800000071526     
                   to: 9.86800000071526     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0.319999992847443     
                   to: 177.696000009775     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.672721   2.299532   2.010207   0.391173
           0.192014   0.204278   0.180639   0.151712 [error]
 Peak      0.065982   0.098235   0.078400   0.022671
           0.021017   0.026793   0.025993   0.019403 [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 5.86e-07 1.08e-06 1.52e-06 4.52e-06 4.35e-06 7.71e-06   erg/cm2
              Error 9.49e-08 1.06e-07 1.77e-07 1.14e-06 4.33e-07 1.26e-06   erg/cm2
Peak flux Power-law 6.05e-01 5.84e-01 3.93e-01 4.14e-01 1.75e+00 2.00e+00   ph/cm2/s
              Error 3.61e-01 2.25e-01 1.78e-01 3.79e-01 6.44e-01 7.15e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.41e-07 1.12e-06 1.58e-06 2.67e-06 4.26e-06 5.91e-06   erg/cm2
              Error 1.16e-07 1.25e-07 2.01e-07 -------- 4.59e-07 1.99e-06   erg/cm2
Peak flux Cutoff-PL 6.13e-01 5.86e-01 3.90e-01 4.03e-01 1.75e+00 2.00e+00   ph/cm2/s
              Error 3.76e-01 2.40e-01 1.93e-01 4.41e-01 6.43e-01 7.22e-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    1.500    0.159    -      -           2.59e-03 2.39e-04   29.850 57
CPL   1.100    0.590     119.3  -36.6      4.03e-03 2.97e-03   28.640 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    1.571    0.646    -      -           1.37e-02 5.09e-03   66.790 57
CPL   3.176    0.000     332.5    0.0      1.99e-03 0.00e+00   66.580 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: 25.344000 sec.
T50 in the 50-300 keV band: 12.416000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  177.376    0.320  177.696
T90   121.696    2.080  123.776
T50    35.824   10.960   46.784
Peak    1.000    8.868    9.868

Click here for the BAT GCN circular template

Special notes of this burst

Image

Pre-slew 15.0-350.0 keV image (Event data; DETECTION mask)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  307.8956    60.9467   0.0310    45.3682   128.9709         1.5843715      6.227 TRIG_00145754                 
 
Foreground time interval of the image:
 18.664  61.853 (delta_t =  43.189 [sec])
Background time interval of the image:
-118.147  18.664 (delta_t = 136.811 [sec])

Lightcurves

Notes:

1) All plots contain as much data as has been downloaded to date.
2) The mask-weighted light curves are using the flight position.
3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
4) 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.
5) 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.
6) 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 12.160000

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 12.160000

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 12.160000

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) For long bursts, a spectral fit of 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.
4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.

Time averaged spectrum fit using the pre-slew DRM

Power-law model

Time interval is from    0.320 sec. to  177.696 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50020     ( -0.158392   0.159463 )
Norm@50keV  : 2.58586E-03    ( -0.000239012   0.000238493 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          29.85 using 59 PHA bins.
# Reduced chi-squared =         0.5237 for     57 degrees of freedom 
# Null hypothesis probability =   9.988640e-01
 
Photon flux (15-150 keV)    in 177.4 sec: 0.322834 ( -0.0308073  0.0308908 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.35159e-06 ( -4.32162e-07  4.34461e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.320 sec. to  177.696 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.10017     ( -0.701812   0.47747 )
Epeak [keV] : 119.312      ( -46.1867 -119.312 )
Norm@50keV  : 4.03022E-03    ( -0.00142634   0.00451474 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          28.64 using 59 PHA bins.
# Reduced chi-squared =         0.5114 for     56 degrees of freedom 
# Null hypothesis probability =   9.991152e-01
 
Photon flux (15-150 keV)    in 177.4 sec: 0.316777 ( -0.032255  0.032216 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.26188e-06 ( -4.59395e-07  4.58295e-07 ) ergs/cm2

Band function

Time interval is from    0.320 sec. to  177.696 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.10035   ( -0.380383   0.632289 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 119.340      ( -37.172 -119.34 )
Norm@50keV   : 4.02879E-03    ( -0.00161018   0.00451736 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          28.64 using 59 PHA bins.
# Reduced chi-squared =         0.5207 for     55 degrees of freedom 
# Null hypothesis probability =   9.987383e-01
 
Photon flux (15-150 keV)    in 177.4 sec: 0.316837 (    ) 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]    : 16.3846  (-1.78041  2.03274)
R^2/D10^2   : 2.70174E-02  (-0.00913144   0.013545)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.49 using 59 PHA bins.
# Reduced chi-squared =         0.9208 for     57 degrees of freedom 
# Null hypothesis probability =   6.448858e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.646e-07   4.878e-08
25- 50  1.136e-06   1.587e-07
50-150  2.150e-06   3.527e-07
15-150  3.551e-06   3.947e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-54.6294      -200)
Norm        : 1.32799       (-0.121069     0.121069)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          29.35 using 59 PHA bins.
# Reduced chi-squared =         0.5149 for     57 degrees of freedom 
# Null hypothesis probability =   9.991132e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.867e-07   6.635e-08
25- 50  1.129e-06   2.885e-07
50-150  2.475e-06   1.206e-06
15-150  4.191e-06   1.160e-06

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.62483        (-2.29887      2.92943)
R1^2/D10^2  : 0.637928        (-0.490367      2.75119)
kT2 [keV]   : 22.4115        (-4.11505      7.93284)
R2^2/D10^2  : 7.77256E-03    (-0.00534207   0.00913804)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          28.96 using 59 PHA bins.
# Reduced chi-squared =         0.5266 for     55 degrees of freedom 
# Null hypothesis probability =   9.985235e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.581e-07   2.576e-07
25- 50  1.052e-06   3.097e-07
50-150  2.576e-06   8.396e-07
15-150  4.185e-06   1.211e-06

Peak spectrum fit

Power-law model

Time interval is from    8.868 sec. to    9.868 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.57108     ( -0.619336   0.672186 )
Norm@50keV  : 1.37354E-02    ( -0.0051792   0.00499368 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.79 using 59 PHA bins.
# Reduced chi-squared =          1.172 for     57 degrees of freedom 
# Null hypothesis probability =   1.759935e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.74962 ( -0.643569  0.645213 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.28935e-07 ( -5.02206e-08  5.06417e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    8.868 sec. to    9.868 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 3.17591     (     )
Epeak [keV] : 332.474      (   )
Norm@50keV  : 1.99065E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.58 using 59 PHA bins.
# Reduced chi-squared =          1.189 for     56 degrees of freedom 
# Null hypothesis probability =   1.573611e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.75221 ( -0.6466  0.63993 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.28554e-07 ( -5.00247e-08  5.0897e-08 ) ergs/cm2

Band function

Time interval is from    8.868 sec. to    9.868 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.82941   ( -4.82941   -4.82941 )
beta        : -1.57801    ( -1.42557   0.622119 )
Epeak [keV] : 19.3108      ( -19.3108 26.377 )
Norm@50keV   : 5589.48    ( -1989.68   1.76617e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.76 using 59 PHA bins.
# Reduced chi-squared =          1.214 for     55 degrees of freedom 
# Null hypothesis probability =   1.328575e-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]    : 12.6624  (-5.49966  17.34)
R^2/D10^2   : 0.346161  (-0.333249   2.3345)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.70 using 59 PHA bins.
# Reduced chi-squared =          1.240 for     57 degrees of freedom 
# Null hypothesis probability =   1.048843e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.177e-08   7.560e-09
25- 50  3.939e-08   2.587e-08
50-150  3.930e-08   2.930e-08
15-150  9.046e-08   5.780e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-199.363      -199.363)
Norm        : 7.14100       (-2.55343     3.65164)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.95 using 59 PHA bins.
# Reduced chi-squared =          1.175 for     57 degrees of freedom 
# Null hypothesis probability =   1.724762e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.778e-08   1.132e-08
25- 50  3.421e-08   2.166e-08
50-150  7.502e-08   4.915e-08
15-150  1.270e-07   8.000e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.82461        (-5.90134      6.63176)
R1^2/D10^2  : 1.53835        (-0.988859      2.99228)
kT2 [keV]   : 39.3389        (-27.8424      -38.8278)
R2^2/D10^2  : 5.51844E-03    (-0.00568759   0.147196)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.40 using 59 PHA bins.
# Reduced chi-squared =          1.207 for     55 degrees of freedom 
# Null hypothesis probability =   1.395746e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.786e-08   1.092e-08
25- 50  3.576e-08   2.445e-08
50-150  7.774e-08   4.647e-08
15-150  1.314e-07   6.980e-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: 1.38446     ( -0.168012   0.16708 )
Norm@50keV  : 6.16178E-03    ( -0.000613843   0.000613837 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.68 using 59 PHA bins.
# Reduced chi-squared =         0.7838 for     57 degrees of freedom 
# Null hypothesis probability =   8.821981e-01
 
Photon flux (15-150 keV)    in 61.53 sec: 0.747785 ( -0.0789578  0.0792892 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.67528e-06 ( -3.88554e-07  3.90115e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.571614     ( -0.848394   0.710796 )
Epeak [keV] : 96.7430      ( -24.9562 238.605 )
Norm@50keV  : 1.46554E-02    ( -0.00765952   0.020216 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.80 using 59 PHA bins.
# Reduced chi-squared =         0.7286 for     56 degrees of freedom 
# Null hypothesis probability =   9.365847e-01
 
Photon flux (15-150 keV)    in 61.53 sec: 0.720090 ( -0.082559  0.082887 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.54666e-06 ( -4.11611e-07  4.10879e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.572212   ( -0.57532   0.887399 )
beta        : -10.0000    ( 10   20 )
Epeak [keV] : 96.7645      ( -19.954 197.182 )
Norm@50keV   : 1.46456E-02    ( -0.00765607   0.0202418 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.80 using 59 PHA bins.
# Reduced chi-squared =         0.7419 for     55 degrees of freedom 
# Null hypothesis probability =   9.231277e-01
 
Photon flux (15-150 keV)    in 61.53 sec: 0.728733 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.61424e-06 ( 0  0 ) ergs/cm2

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

S(25-50 keV)  = 1.08e-06
S(50-100 keV) = 1.52e-06

T90 vs. Hardness ratio plot

T90                                   = 121.695999950171 sec.
Hardness ratio (energy fluence ratio) = 1.40741

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.37473
Count Ratio (50-100 keV) / (15-25 keV) = 1.20176

Mask shadow pattern (with DETECTION mask)

IMX = -6.370608514465120E-01, IMY = -7.875213906274052E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 12.160000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 12.160000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 12.160000

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:
-118.147400 0.320000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.5907  22.0082    1.0  44.7  -60.3   4.9287  12.0    2.4	Crab

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

Time interval of the image:
0.320000 61.852590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.8323  22.0484    5.1  44.8  -60.6   0.7705   2.3   11.3	Crab                          
 14.5602  35.4019    1.7  31.3   48.8   0.8001   6.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
122.252600 302.750000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.5191  35.2332    7.3  42.2  153.5  -0.4615  -1.6    7.2	Her X-1                       
299.5847  35.2094    0.4  26.3   91.5   5.3503  28.4    0.5	Cyg X-1                       
308.0949  40.9902    1.8  19.9   75.6   1.0201   6.5    2.4	Cyg X-3                       
326.4316  38.3819    8.4  25.3   40.5   0.1998   1.4   12.8	Cyg X-2                       
357.0341  36.8823    2.2  38.9    1.4   0.9421   5.3 ------	UNKNOWN                       
307.7785  60.9641    2.2   0.1 -163.1   0.7053   5.2 ------	UNKNOWN                       
  2.6180  54.0585    2.0  29.3  -25.4   0.7966   5.7 ------	UNKNOWN                       
126.1010  77.4780    3.0  41.6 -103.3   2.6836   3.8 ------	UNKNOWN

Plot creation:
Fri Dec 18 21:02:39 EST 2015