batgrbproduct analysis for trigger=356890

batgrbproduct Analysis for Trigger=356890

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): Sun Jan 19 15:36:31 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger356890
======================================================================

  Trigger: 00356890      Segment: 000

  BAT Trigger Time: 268817919.488   [s; MET]
      Trigger Stop: 268817920.512   [s; MET]
               UTC: 2009-07-09T07:38:34.592520    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 289.933176236556   Dec: 60.7311647159044  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.31
     Image Trigger?:     NO
     Rate S/N Ratio:     43.5430821141545  [ if not an image trigger ]
     Image S/N Ratio:    17.31

  Flight Position:   [ source = BAT ]
    RA: 289.933176236556   Dec: 60.7311647159044  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 289.944342258413   Dec: 60.7278806459312  [deg; J2000]  
        { 19h 19m 46.6s , +60d 43' 40.4" }
         +/- 0.664424288040391 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.172793605025459 [arcmin] (formal 1-sigma fit error)
    SNR: 54.5465975884804
 
  Angular difference between Flight and Ground position is 0.382264 arcmin
 
  Partial Coding Fraction: 0.75    [ including projection effects ]

  Duration
     T90: 88.7439999580383 +/- 1.12051415709472
        Measured from: -1.25199997425079
                   to: 87.4919999837875     [s; relative to TRIGTIME]
     T50: 31.0839999318123 +/- 0.452636704127899
        Measured from: 23.2200000286102
                   to: 54.3039999604225     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 21.8280000090599     
                   to: 22.8280000090599     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -67.2960000038147     
                   to: 101.472000002861     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     8.031392  13.115885  12.410792   3.720451
           0.083290   0.091916   0.087266   0.072803 [error]
 Peak      0.189804   0.336213   0.360296   0.120268
           0.008957   0.011172   0.011533   0.008937 [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 2.43e-06 5.34e-06 9.24e-06 3.70e-05 2.53e-05 5.41e-05   erg/cm2
              Error 7.60e-08 9.87e-08 1.23e-07 1.19e-06 3.24e-07 1.20e-06   erg/cm2
Peak flux Power-law 1.77e+00 2.36e+00 2.32e+00 4.10e+00 7.79e+00 1.05e+01   ph/cm2/s
              Error 1.29e-01 1.04e-01 9.28e-02 3.57e-01 2.84e-01 4.23e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.32e-06 5.34e-06 9.39e-06 3.21e-05 2.52e-05 4.92e-05   erg/cm2
              Error 1.09e-07 1.00e-07 1.62e-07 2.45e-06 3.35e-07 2.44e-06   erg/cm2
Peak flux Cutoff-PL 1.63e+00 2.40e+00 2.40e+00 3.02e+00 7.69e+00 9.45e+00   ph/cm2/s
              Error 1.65e-01 1.11e-01 1.15e-01 -------- 2.95e-01 8.14e-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    1.209    0.025    -      -           1.48e-02 2.06e-04   39.210 57
CPL   1.073    0.098     439.3  548.4      1.67e-02 1.15e-03   33.870 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.025    0.063    -      -           6.76e-02 2.42e-03   37.360 57
CPL   0.724    0.255     243.0  408.7      9.21e-02 2.39e-02   33.010 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: 85.376000 sec.
T50 in the 50-300 keV band: 29.248000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  168.768  -67.296  101.472
T90    88.744   -1.252   87.492
T50    31.084   23.220   54.304
Peak    1.000   21.828   22.828

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
  289.9443    60.7279   0.0035    19.1104   -93.2045         6.5682266     54.547 TRIG_00356890                 
 
Foreground time interval of the image:
-49.787  16.613 (delta_t =  66.400 [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  -67.296 sec. to  101.472 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.20946     ( -0.0246825   0.0245909 )
Norm@50keV  : 1.48000E-02    ( -0.000206478   0.000206079 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.21 using 59 PHA bins.
# Reduced chi-squared =         0.6880 for     57 degrees of freedom 
# Null hypothesis probability =   9.652633e-01
 
Photon flux (15-150 keV)    in 168.8 sec: 1.73957 ( -0.0272976  0.027379 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.52785e-05 ( -3.24175e-07  3.24169e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -67.296 sec. to  101.472 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07319     ( -0.102717   0.0927028 )
Epeak [keV] : 439.308      ( -158.591 938.165 )
Norm@50keV  : 1.67094E-02    ( -0.000749629   0.00155954 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.87 using 59 PHA bins.
# Reduced chi-squared =         0.6049 for     56 degrees of freedom 
# Null hypothesis probability =   9.915618e-01
 
Photon flux (15-150 keV)    in 168.8 sec: 1.71968 ( -0.03048  0.03065 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.51792e-05 ( -3.35068e-07  3.34899e-07 ) ergs/cm2

Band function

Time interval is from  -67.296 sec. to  101.472 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.07316   ( -0.612885   5.26071 )
beta        : -10.00000    ( 10   20 )
Epeak [keV] : 439.211      ( -67.5264 946.425 )
Norm@50keV   : 1.67080E-02    ( -0.00021319   0.0015582 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.87 using 59 PHA bins.
# Reduced chi-squared =         0.6159 for     55 degrees of freedom 
# Null hypothesis probability =   9.888785e-01
 
Photon flux (15-150 keV)    in 168.8 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]    : 23.0431  (  )
R^2/D10^2   : 4.91693E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =        1017.61 using 59 PHA bins.
# Reduced chi-squared =        17.8528 for     57 degrees of freedom 
# Null hypothesis probability =  5.304823e-176
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.980e-07   2.178e-08
25- 50  4.334e-06   9.959e-08
50-150  1.719e-05   2.954e-07
15-150  2.232e-05   2.954e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 7.79165       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         791.03 using 59 PHA bins.
# Reduced chi-squared =         13.878 for     57 degrees of freedom 
# Null hypothesis probability =  8.423006e-130
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.275e-06   5.148e-08
25- 50  6.300e-06   9.284e-08
50-150  1.382e-05   2.110e-07
15-150  2.339e-05   3.714e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.62837        (-0.504948      0.532769)
R1^2/D10^2  : 0.710194        (-0.127328      0.161569)
kT2 [keV]   : 34.6678        (-1.60289      1.86999)
R2^2/D10^2  : 1.11000E-02    (-0.00178609   0.00193315)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.12 using 59 PHA bins.
# Reduced chi-squared =         0.6750 for     55 degrees of freedom 
# Null hypothesis probability =   9.692062e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.018e-06   1.156e-07
25- 50  5.465e-06   1.283e-07
50-150  1.767e-05   3.882e-07
15-150  2.516e-05   4.558e-07

Peak spectrum fit

Power-law model

Time interval is from   21.828 sec. to   22.828 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.02473     ( -0.0636653   0.0633282 )
Norm@50keV  : 6.75714E-02    ( -0.00242066   0.00241961 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          37.36 using 59 PHA bins.
# Reduced chi-squared =         0.6555 for     57 degrees of freedom 
# Null hypothesis probability =   9.794314e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.79060 ( -0.283938  0.284234 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.24378e-07 ( -2.88784e-08  2.90139e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   21.828 sec. to   22.828 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.724292     ( -0.262407   0.247358 )
Epeak [keV] : 243.019      ( -86.649 730.726 )
Norm@50keV  : 9.20583E-02    ( -0.0202272   0.0275232 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.01 using 59 PHA bins.
# Reduced chi-squared =         0.5895 for     56 degrees of freedom 
# Null hypothesis probability =   9.938785e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.68940 ( -0.29542  0.29541 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.13715e-07 ( -3.0763e-08  3.0614e-08 ) ergs/cm2

Band function

Time interval is from   21.828 sec. to   22.828 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99997   ( -4.99997   -4.99997 )
beta        : -1.05256    ( -0.0677833   0.0673281 )
Epeak [keV] : 25.5174      ( -25.5174 3.80678 )
Norm@50keV   : 4103.03    ( -146.021   1.03089e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.31 using 59 PHA bins.
# Reduced chi-squared =         0.6420 for     55 degrees of freedom 
# Null hypothesis probability =   9.820785e-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]    : 21.4586  (  )
R^2/D10^2   : 0.299655  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         147.57 using 59 PHA bins.
# Reduced chi-squared =         2.5889 for     57 degrees of freedom 
# Null hypothesis probability =   5.801889e-10
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.582e-08   1.860e-09
25- 50  1.345e-07   7.250e-09
50-150  4.624e-07   2.720e-08
15-150  6.227e-07   2.850e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 31.4460       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         216.29 using 59 PHA bins.
# Reduced chi-squared =         3.7945 for     57 degrees of freedom 
# Null hypothesis probability =   2.168452e-20
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.830e-08   2.860e-09
25- 50  1.506e-07   6.250e-09
50-150  3.303e-07   1.340e-08
15-150  5.593e-07   2.285e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.48161        (-1.4094      1.62557)
R1^2/D10^2  : 2.85807        (-1.10998      2.13115)
kT2 [keV]   : 33.6116        (-4.17358      6.56744)
R2^2/D10^2  : 6.28632E-02    (-0.0272919   0.0346433)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          33.55 using 59 PHA bins.
# Reduced chi-squared =         0.6100 for     55 degrees of freedom 
# Null hypothesis probability =   9.900725e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.903e-08   7.835e-09
25- 50  1.414e-07   1.495e-08
50-150  5.277e-07   6.545e-08
15-150  7.180e-07   8.245e-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: 1.34711     ( -0.0544441   0.0543581 )
Norm@50keV  : 6.38295E-03    ( -0.000184409   0.000184409 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.98 using 59 PHA bins.
# Reduced chi-squared =         0.7716 for     57 degrees of freedom 
# Null hypothesis probability =   8.967445e-01
 
Photon flux (15-150 keV)    in 66.4 sec: 0.768505 ( -0.0237803  0.02383 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.14212e-06 ( -1.2976e-07  1.30044e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.10153     ( -0.226488   0.215017 )
Epeak [keV] : 200.159      ( -70.1039 780.654 )
Norm@50keV  : 8.28048E-03    ( -0.00164854   0.00217812 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.16 using 59 PHA bins.
# Reduced chi-squared =         0.7172 for     56 degrees of freedom 
# Null hypothesis probability =   9.454126e-01
 
Photon flux (15-150 keV)    in 66.4 sec: 0.755956 ( -0.025987  0.026037 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.07217e-06 ( -1.45243e-07  1.445e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.838229   ( -0.324218   5.56338 )
beta        : -1.48867    ( 1.48894   0.128035 )
Epeak [keV] : 105.460      ( -70.6568 215.732 )
Norm@50keV   : 1.16483E-02    ( -0.00398098   5.46468 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.63 using 59 PHA bins.
# Reduced chi-squared =         0.7023 for     55 degrees of freedom 
# Null hypothesis probability =   9.539738e-01
 
Photon flux (15-150 keV)    in 66.4 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)  = 5.34e-06
S(50-100 keV) = 9.24e-06

T90 vs. Hardness ratio plot

T90                                   = 88.7439999580383 sec.
Hardness ratio (energy fluence ratio) = 1.73034

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.63308
Count Ratio (50-100 keV) / (15-25 keV) = 1.54529

Mask shadow pattern

IMX = -1.936842256253885E-02, IMY = 3.459417550868899E-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:

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

Time interval of the image:
-49.787400 16.612600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.5853  35.4805    8.4  29.5  179.8   0.1677   1.4   10.4	Her X-1                       
288.6720  10.7955    7.5  31.0   95.3   0.3149   1.5   11.7	GRS 1915+105                  
299.6047  35.1908    0.4   8.9   43.3   2.7980  25.9    1.0	Cyg X-1                       
308.1638  41.0442   10.5  12.3   -3.2   0.1199   1.1    6.0	Cyg X-3                       
326.1726  38.3223   63.3  26.4   -4.8   0.0239   0.2    0.1	Cyg X-2                       
253.6014  53.3555    2.3  27.9 -142.6   0.6419   5.1 ------	UNKNOWN                       
289.9443  60.7279    0.2  19.1  -93.2   6.5685  54.5 ------	UNKNOWN                       
236.8091  48.3496    2.3  38.6 -151.3   0.8463   5.0 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
57.212600 538.412610
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.6971  35.2763   40.0  33.9  146.7  -0.5247  -0.3   12.4	Her X-1                       
299.6148  35.2125    0.9  26.2   71.0  19.4661  13.4    1.4	Cyg X-1                       
308.2396  40.7885   17.0  22.9   51.3   0.9294   0.7   11.5	Cyg X-3                       
326.0660  38.3572    6.9  31.7   27.3   2.5272   1.7    5.4	Cyg X-2                       
297.3541  27.6935    2.6  33.4   77.1   9.1162   4.5 ------	UNKNOWN                       
234.3248  45.8116    3.7  35.1  179.8   4.3803   3.2 ------	UNKNOWN                       
289.9643  60.7279    1.2   0.0  -61.6  10.3652   9.6 ------	UNKNOWN                       
  8.2564  31.4627    2.3  57.3   -8.1  22.2508   5.0 ------	UNKNOWN                       
198.3789  37.3468    3.7  58.8 -159.3  23.5416   3.1 ------	UNKNOWN                       
180.7906  71.6683    3.4  39.0 -119.1   8.0788   3.4 ------	UNKNOWN                       
 33.3278  54.2892    3.4  50.1  -43.2  16.7188   3.4 ------	UNKNOWN

Plot creation:
Sun May 31 03:37:45 EDT 2015