batgrbproduct analysis for trigger=642018

batgrbproduct Analysis for Trigger=642018

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): Fri Jun 26 00:18:20 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger642018
======================================================================

  Trigger: 00642018      Segment: 000

  BAT Trigger Time: 454678951.872   [s; MET]
      Trigger Stop: 454678952.896   [s; MET]
               UTC: 2015-05-30T11:42:18.222320    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 327.523415997874   Dec: 57.4904208320749  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.11
     Image Trigger?:     NO
     Rate S/N Ratio:     23.7697286480094  [ if not an image trigger ]
     Image S/N Ratio:    9.11

  Flight Position:   [ source = BAT ]
    RA: 327.523415997874   Dec: 57.4904208320749  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 327.511672646044   Dec: 57.5186072495788  [deg; J2000]  
        { 21h 50m 02.8s , +57d 31' 07.0" }
         +/- 1.20346359197235 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.401392262154241 [arcmin] (formal 1-sigma fit error)
    SNR: 23.3460900749071
 
  Angular difference between Flight and Ground position is 1.733031 arcmin
 
  Partial Coding Fraction: 0.1757812    [ including projection effects ]

  Duration
     T90: 6.89600002765656 +/- 0.817253912009944
        Measured from: -3.95199996232986
                   to: 2.94400006532669     [s; relative to TRIGTIME]
     T50: 3.0560000538826 +/- 0.572433362789055
        Measured from: -1.61599999666214
                   to: 1.44000005722046     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.467999994754791     
                   to: 1.46799999475479     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -4.783999979496     
                   to: 3.28000003099442     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.612667   0.896375   0.842826   0.239208
           0.052958   0.058947   0.051920   0.039808 [error]
 Peak      0.095462   0.155519   0.154298   0.078120
           0.018679   0.022651   0.020814   0.015981 [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 2.35e-07 4.35e-07 6.20e-07 1.87e-06 1.77e-06 3.16e-06   erg/cm2
              Error 2.83e-08 3.20e-08 5.02e-08 3.26e-07 1.25e-07 3.60e-07   erg/cm2
Peak flux Power-law 1.10e+00 1.30e+00 1.10e+00 1.59e+00 4.07e+00 5.09e+00   ph/cm2/s
              Error 2.97e-01 2.14e-01 1.64e-01 5.02e-01 5.81e-01 6.96e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.17e-07 4.50e-07 6.46e-07 1.16e-06 1.74e-06 2.48e-06   erg/cm2
              Error 3.44e-08 3.67e-08 5.88e-08 6.38e-07 1.30e-07 6.44e-07   erg/cm2
Peak flux Cutoff-PL 1.12e+00 1.31e+00 1.10e+00 1.55e+00 4.08e+00 5.09e+00   ph/cm2/s
              Error 2.74e-01 1.91e-01 1.69e-01 6.35e-01 5.82e-01 8.02e-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    1.488    0.113    -      -           2.31e-02 1.54e-03   69.790 57
CPL   1.109    0.444     128.4  -41.5      3.48e-02 1.73e-02   67.510 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.237    0.234    -      -           3.45e-02 4.64e-03   43.490 57
CPL   1.240    0.271    9999.4    0.0      3.46e-02 3.23e-02   43.500 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: 7.232000 sec.
T50 in the 50-300 keV band: 2.688000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    8.064   -4.784    3.280
T90     6.896   -3.952    2.944
T50     3.056   -1.616    1.440
Peak    1.000    0.468    1.468

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
  327.5117    57.5186   0.0083    48.4398   166.0101         2.8673145     23.346 TRIG_00642018                 
 
Foreground time interval of the image:
 -4.784   3.280 (delta_t =   8.064 [sec])
Background time interval of the image:
-646.671 -629.213 (delta_t =  17.459 [sec])
-239.872  -4.784 (delta_t = 235.088 [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 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   -4.784 sec. to    3.280 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.48821     ( -0.112611   0.112855 )
Norm@50keV  : 2.30904E-02    ( -0.00153737   0.00153632 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.79 using 59 PHA bins.
# Reduced chi-squared =          1.224 for     57 degrees of freedom 
# Null hypothesis probability =   1.190037e-01
 
Photon flux (15-150 keV)    in 8.064 sec: 2.87354 ( -0.203144  0.203678 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.76985e-06 ( -1.24715e-07  1.24991e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -4.784 sec. to    3.280 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.10945     ( -0.471439   0.417446 )
Epeak [keV] : 128.415      ( -45.4378 -128.415 )
Norm@50keV  : 3.48431E-02    ( -0.0123002   0.02228 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.51 using 59 PHA bins.
# Reduced chi-squared =          1.206 for     56 degrees of freedom 
# Null hypothesis probability =   1.394467e-01
 
Photon flux (15-150 keV)    in 8.064 sec: 2.82549 ( -0.21013  0.21055 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.74439e-06 ( -1.29822e-07  1.29338e-07 ) ergs/cm2

Band function

Time interval is from   -4.784 sec. to    3.280 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.10941   ( -0.318138   0.487583 )
beta        : -10.0000    ( 10   0 )
Epeak [keV] : 128.386      ( -32.4388 -128.386 )
Norm@50keV   : 3.48411E-02    ( -0.0123088   0.0222849 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.51 using 59 PHA bins.
# Reduced chi-squared =          1.227 for     55 degrees of freedom 
# Null hypothesis probability =   1.199797e-01
 
Photon flux (15-150 keV)    in 8.064 sec: 2.82787 (    ) 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]    : 17.0080  (  )
R^2/D10^2   : 0.212326  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         117.53 using 59 PHA bins.
# Reduced chi-squared =         2.0620 for     57 degrees of freedom 
# Null hypothesis probability =   4.300882e-06
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.009e-07   1.375e-08
25- 50  4.464e-07   4.254e-08
50-150  9.222e-07   1.082e-07
15-150  1.469e-06   1.218e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 11.8402       (-0.791362     0.791376)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.49 using 59 PHA bins.
# Reduced chi-squared =          1.219 for     57 degrees of freedom 
# Null hypothesis probability =   1.239592e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.390e-07   1.871e-08
25- 50  4.597e-07   4.471e-08
50-150  1.008e-06   2.003e-07
15-150  1.707e-06   1.814e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.32879        (-1.35377      1.72819)
R1^2/D10^2  : 3.93010        (-2.23565      5.99792)
kT2 [keV]   : 24.8283        (-3.45921      5.3098)
R2^2/D10^2  : 4.74454E-02    (-0.024357   0.0359214)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.18 using 59 PHA bins.
# Reduced chi-squared =          1.203 for     55 degrees of freedom 
# Null hypothesis probability =   1.437674e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.225e-07   8.104e-08
25- 50  4.352e-07   9.040e-08
50-150  1.087e-06   2.719e-07
15-150  1.744e-06   3.423e-07

Peak spectrum fit

Power-law model

Time interval is from    0.468 sec. to    1.468 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23742     ( -0.236577   0.230639 )
Norm@50keV  : 3.45116E-02    ( -0.00464527   0.00463735 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.49 using 59 PHA bins.
# Reduced chi-squared =         0.7630 for     57 degrees of freedom 
# Null hypothesis probability =   9.062566e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.07359 ( -0.580516  0.582133 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.46547e-07 ( -4.92484e-08  4.93744e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.468 sec. to    1.468 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.23954     ( -0.315289   0.226183 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 3.46065E-02    ( -0.0346794   0.0298742 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.50 using 59 PHA bins.
# Reduced chi-squared =         0.7769 for     56 degrees of freedom 
# Null hypothesis probability =   8.883564e-01
 
Photon flux (15-150 keV)    in 1 sec: 4.08441 ( -0.5931  0.57132 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.46311e-07 ( -4.7856e-08  4.9259e-08 ) ergs/cm2

Band function

Time interval is from    0.468 sec. to    1.468 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.74148   ( -4.74148   -4.74148 )
beta        : -1.35840    ( -0.295544   0.277489 )
Epeak [keV] : 30.0361      ( -30.0361 7.02932 )
Norm@50keV   : 664.909    ( -88.6763   1.13628e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.55 using 59 PHA bins.
# Reduced chi-squared =         0.7736 for     55 degrees of freedom 
# Null hypothesis probability =   8.898738e-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]    : 18.5780  (-3.80588  5.55199)
R^2/D10^2   : 0.231412  (-0.228318   0.272987)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          64.15 using 59 PHA bins.
# Reduced chi-squared =          1.125 for     57 degrees of freedom 
# Null hypothesis probability =   2.402133e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.582e-08   4.665e-09
25- 50  7.490e-08   1.806e-08
50-150  1.891e-07   5.030e-08
15-150  2.798e-07   5.735e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 17.1786       (-2.3497     2.34924)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.85 using 59 PHA bins.
# Reduced chi-squared =         0.8746 for     57 degrees of freedom 
# Null hypothesis probability =   7.377423e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.278e-08   2.423e-08
25- 50  8.229e-08   4.550e-08
50-150  1.805e-07   1.007e-07
15-150  3.055e-07   1.680e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.05280        (-2.69319      3.13837)
R1^2/D10^2  : 1.90281        (-0.999654      1.95149)
kT2 [keV]   : 50.0171        (-28.0299      -61.1546)
R2^2/D10^2  : 8.26265E-03    (-0.00466505   0.0237664)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.87 using 59 PHA bins.
# Reduced chi-squared =         0.7431 for     55 degrees of freedom 
# Null hypothesis probability =   9.219547e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.271e-08   1.958e-08
25- 50  8.163e-08   4.657e-08
50-150  2.247e-07   1.294e-07
15-150  3.390e-07   1.849e-07

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: 1.48821     ( -0.112611   0.112855 )
Norm@50keV  : 2.30904E-02    ( -0.00153737   0.00153632 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.79 using 59 PHA bins.
# Reduced chi-squared =          1.224 for     57 degrees of freedom 
# Null hypothesis probability =   1.190037e-01
 
Photon flux (15-150 keV)    in 8.064 sec: 2.87354 ( -0.203144  0.203678 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.76985e-06 ( -1.24715e-07  1.24991e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.10945     ( -0.471439   0.417446 )
Epeak [keV] : 128.415      ( -45.4378 -128.415 )
Norm@50keV  : 3.48431E-02    ( -0.0122995   0.02228 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.51 using 59 PHA bins.
# Reduced chi-squared =          1.206 for     56 degrees of freedom 
# Null hypothesis probability =   1.394467e-01
 
Photon flux (15-150 keV)    in 8.064 sec: 2.82549 ( -0.21013  0.21055 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.74439e-06 ( -1.29822e-07  1.29338e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.10941   ( -0.318138   0.487583 )
beta        : -10.0000    ( 10   3.55271e-15 )
Epeak [keV] : 128.386      ( -32.4387 -128.386 )
Norm@50keV   : 3.48411E-02    ( -0.0123088   0.0222849 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.51 using 59 PHA bins.
# Reduced chi-squared =          1.227 for     55 degrees of freedom 
# Null hypothesis probability =   1.199797e-01
 
Photon flux (15-150 keV)    in 8.064 sec: 2.82787 (    ) 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)  = 4.35e-07
S(50-100 keV) = 6.20e-07

T90 vs. Hardness ratio plot

T90                                   = 6.89600002765656 sec.
Hardness ratio (energy fluence ratio) = 1.42529

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.46307
Count Ratio (50-100 keV) / (15-25 keV) = 1.37567

Mask shadow pattern

IMX = -1.094449698655726E+00, IMY = -2.726725527081504E-01

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:
-646.671410 -629.212800
-239.872000 -4.784000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.0527  38.4208    5.5  44.0  140.1   1.5224   2.1    8.2	Cyg X-2                       
334.8341  24.5584    2.7  36.3  118.7   2.0372   4.3 ------	UNKNOWN                       
330.4102  32.2947    2.2  40.0  131.4   3.3048   5.4 ------	UNKNOWN                       
 62.6788  61.5056    2.8  50.7 -135.0   4.5915   4.2 ------	UNKNOWN

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

Time interval of the image:
-4.784000 3.280000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.2943  38.4061    7.8  43.9  140.1  -0.2237  -1.5    7.7	Cyg X-2                       
327.5117  57.5186    0.5  48.4  166.0   2.8676  23.3 ------	UNKNOWN                       
 35.3120  73.0442    2.5  51.6 -154.7   0.4758   4.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
86.228590 562.428600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5824  35.1939    0.4  29.1   72.0  17.7159  27.0    0.6	Cyg X-1                       
308.1259  40.9812    2.0  20.6   65.3   2.6646   5.8    1.9	Cyg X-3                       
326.0879  38.4443    4.0  19.1   23.4   1.1313   2.9    8.3	Cyg X-2                       
342.6599  39.7349    2.7  20.3  -15.5   1.5107   4.2 ------	UNKNOWN                       
  5.0091  50.9903    3.2  22.5  -69.6   1.7873   3.6 ------	UNKNOWN                       
 30.9455  67.1739    3.5  29.5 -115.2   1.6507   3.3 ------	UNKNOWN                       
 78.5962  65.3860    3.6  46.7 -127.8   6.5633   3.2 ------	UNKNOWN

Plot creation:
Fri Jun 26 00:49:53 EDT 2015