batgrbproduct analysis for trigger=583861

batgrbproduct Analysis for Trigger=583861

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 Mar  3 23:44:00 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger583861
======================================================================

  Trigger: 00583861      Segment: 000

  BAT Trigger Time: 411393472   [s; MET]
      Trigger Stop: 411393536   [s; MET]
               UTC: 2014-01-14T11:57:40.482160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 188.482555589256   Dec: 27.9264396826658  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.96
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.96

  Flight Position:   [ source = BAT ]
    RA: 188.482555589256   Dec: 27.9264396826658  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 188.495258015931   Dec: 27.9396513490374  [deg; J2000]  
        { 12h 33m 58.9s , +27d 56' 22.7" }
         +/- 1.92888653613018 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.830706882341634 [arcmin] (formal 1-sigma fit error)
    SNR: 11.8997381825249
 
  Angular difference between Flight and Ground position is 1.040085 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 139.947999954224 +/- 15.8801637489094
        Measured from: 43.6079999804497
                   to: 183.555999934673     [s; relative to TRIGTIME]
     T50: 52.783999979496 +/- 3.21291203934822
        Measured from: 87.1679999828339
                   to: 139.95199996233     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 115.879999995232     
                   to: 116.879999995232     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 19.444000005722     
                   to: 202.519999980927     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.566649   2.512148   1.161806   0.241156
           0.077727   0.080065   0.069262   0.059073 [error]
 Peak      0.047589   0.044989   0.018141   0.006854
           0.006160   0.006561   0.005504   0.004524 [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 7.54e-07 9.81e-07 9.35e-07 1.58e-06 3.20e-06 4.25e-06   erg/cm2
              Error 5.20e-08 4.11e-08 6.71e-08 2.36e-07 1.50e-07 2.96e-07   erg/cm2
Peak flux Power-law 4.36e-01 3.14e-01 1.50e-01 1.01e-01 9.47e-01 9.99e-01   ph/cm2/s
              Error 8.89e-02 4.97e-02 4.31e-02 5.39e-02 1.46e-01 1.59e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.28e-07 1.01e-06 9.27e-07 9.95e-07 3.10e-06 3.66e-06   erg/cm2
              Error 6.20e-08 5.13e-08 7.12e-08 5.72e-07 1.90e-07 6.84e-07   erg/cm2
Peak flux Cutoff-PL 4.33e-01 3.19e-01 1.48e-01 8.15e-02 9.44e-01 9.82e-01   ph/cm2/s
              Error 9.23e-02 6.28e-02 4.79e-02 8.94e-02 1.47e-01 1.76e-01   ph/cm2/s
 
Fluence        Band 7.11e-07 1.01e-06 9.09e-07 1.32e-06 3.11e-06 3.97e-06   erg/cm2
              Error 6.51e-08 5.48e-08 -------- -------- -------- --------   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    2.069    0.088    -      -           1.88e-03 9.51e-05   52.750 57
CPL   1.803    0.349      32.5   23.9      2.64e-03 1.23e-03   51.020 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.069    0.303    -      -           6.11e-03 1.33e-03   44.990 57
CPL   1.955    0.800      15.3   -0.3      7.18e-03 0.00e+00   44.960 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: 129.216000 sec.
T50 in the 50-300 keV band: 54.976000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  183.076   19.444  202.520
T90   139.948   43.608  183.556
T50    52.784   87.168  139.952
Peak    1.000  115.880  116.880

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
  188.4953    27.9397   0.0162     6.9139  -168.0670         1.0168156     11.900 TRIG_00583861                 
 
Foreground time interval of the image:
 19.444  72.501 (delta_t =  53.057 [sec])
Background time interval of the image:
-239.000  19.444 (delta_t = 258.444 [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 64.000000

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 64.000000

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 64.000000

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)

The mask-weighted light curves based on cleaned DPHs

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   19.444 sec. to  202.520 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.06945     ( -0.086729   0.0883423 )
Norm@50keV  : 1.88467E-03    ( -9.55859e-05   9.46846e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.75 using 59 PHA bins.
# Reduced chi-squared =         0.9254 for     57 degrees of freedom 
# Null hypothesis probability =   6.352159e-01
 
Photon flux (15-150 keV)    in 183.1 sec: 0.292115 ( -0.0128548  0.0128904 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.19737e-06 ( -1.49013e-07  1.50073e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   19.444 sec. to  202.520 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.80323     ( -0.374728   0.322691 )
Epeak [keV] : 32.4622      ( -31.4668 16.2821 )
Norm@50keV  : 2.63514E-03    ( -0.000901158   0.00156199 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.02 using 59 PHA bins.
# Reduced chi-squared =         0.9111 for     56 degrees of freedom 
# Null hypothesis probability =   6.633397e-01
 
Photon flux (15-150 keV)    in 183.1 sec: 0.286677 ( -0.014522  0.014548 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.10446e-06 ( -1.89344e-07  1.90735e-07 ) ergs/cm2

Band function

Time interval is from   19.444 sec. to  202.520 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.58507   ( 1.59055   1.59055 )
beta        : -2.23197    ( 2.23011   0.203644 )
Epeak [keV] : 33.0795      ( -33.0336 12.8751 )
Norm@50keV   : 3.62577E-03    ( -0.00134373   455.246 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.41 using 59 PHA bins.
# Reduced chi-squared =         0.9165 for     55 degrees of freedom 
# Null hypothesis probability =   6.505223e-01
 
Photon flux (15-150 keV)    in 183.1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.10887e-06 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.3477  (  )
R^2/D10^2   : 0.109988  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         163.55 using 59 PHA bins.
# Reduced chi-squared =         2.8693 for     57 degrees of freedom 
# Null hypothesis probability =   3.151252e-12
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.439e-07   3.479e-08
25- 50  1.157e-06   4.962e-08
50-150  6.663e-07   7.425e-08
15-150  2.268e-06   1.053e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 63.8565       (-8.22604      10.1841)
Norm        : 1.44531       (-0.112677     0.125093)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          55.38 using 59 PHA bins.
# Reduced chi-squared =         0.9717 for     57 degrees of freedom 
# Null hypothesis probability =   5.359043e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.714e-07   4.330e-08
25- 50  1.041e-06   4.422e-08
50-150  1.246e-06   1.406e-07
15-150  2.958e-06   1.593e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.55547        (-0.841665      0.943015)
R1^2/D10^2  : 0.883000        (-0.381554      0.811221)
kT2 [keV]   : 18.4336        (-2.69854      4.12018)
R2^2/D10^2  : 8.65030E-03    (-0.00478065   0.00811255)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.54 using 59 PHA bins.
# Reduced chi-squared =          1.046 for     55 degrees of freedom 
# Null hypothesis probability =   3.815025e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.955e-07   1.171e-07
25- 50  9.973e-07   1.284e-07
50-150  1.281e-06   2.635e-07
15-150  2.974e-06   3.625e-07

Peak spectrum fit

Power-law model

Time interval is from  115.880 sec. to  116.880 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.06890     ( -0.287236   0.318722 )
Norm@50keV  : 6.11038E-03    ( -0.00135861   0.00131016 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.99 using 59 PHA bins.
# Reduced chi-squared =         0.7894 for     57 degrees of freedom 
# Null hypothesis probability =   8.751495e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.946825 ( -0.145628  0.145649 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.66162e-08 ( -1.11561e-08  1.16e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from  115.880 sec. to  116.880 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.95521     ( -1.48558   0.114383 )
Epeak [keV] : 15.2561      ( -14.692 -15.2594 )
Norm@50keV  : 7.17858E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.96 using 59 PHA bins.
# Reduced chi-squared =         0.8029 for     56 degrees of freedom 
# Null hypothesis probability =   8.545960e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.943550 ( -0.145796  0.14744 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.57785e-08 ( -1.23864e-08  1.22831e-08 ) ergs/cm2

Band function

Time interval is from  115.880 sec. to  116.880 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 3.76745   ( -3.7663   -3.7663 )
beta        : -2.15368    ( -0.485361   0.336348 )
Epeak [keV] : 19.8753      ( -19.852 42.7814 )
Norm@50keV   : 455.209    ( -457.716   2.43414e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.64 using 59 PHA bins.
# Reduced chi-squared =         0.8116 for     55 degrees of freedom 
# Null hypothesis probability =   8.397663e-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]    : 8.45504  (-1.46596  1.76002)
R^2/D10^2   : 0.838616  (-0.436574   0.922176)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.30 using 59 PHA bins.
# Reduced chi-squared =         0.9526 for     57 degrees of freedom 
# Null hypothesis probability =   5.770804e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.126e-08   3.181e-09
25- 50  2.165e-08   5.430e-09
50-150  6.797e-09   3.079e-09
15-150  3.970e-08   9.620e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 55.4072       (-20.8391      43.2216)
Norm        : 5.16488       (-1.24033     1.70524)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.60 using 59 PHA bins.
# Reduced chi-squared =         0.7999 for     57 degrees of freedom 
# Null hypothesis probability =   8.611397e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.280e-08   2.746e-09
25- 50  1.899e-08   3.880e-09
50-150  2.019e-08   8.782e-09
15-150  5.198e-08   1.477e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.89973        (-3.06888      2.45843)
R1^2/D10^2  : 2.72496        (-1.87447      44.7682)
kT2 [keV]   : 23.1060        (-13.232      -23.6045)
R2^2/D10^2  : 1.13047E-02    (-0.0102788   0.307631)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          45.69 using 59 PHA bins.
# Reduced chi-squared =         0.8307 for     55 degrees of freedom 
# Null hypothesis probability =   8.102460e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.339e-08   7.624e-09
25- 50  1.775e-08   9.046e-09
50-150  2.468e-08   1.515e-08
15-150  5.582e-08   2.808e-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: 1.84961     ( -0.242802   0.258627 )
Norm@50keV  : 1.05461E-03    ( -0.000167762   0.00016104 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.95 using 59 PHA bins.
# Reduced chi-squared =         0.9114 for     57 degrees of freedom 
# Null hypothesis probability =   6.644868e-01
 
Photon flux (15-150 keV)    in 53.06 sec: 0.148213 ( -0.0180913  0.0180926 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.14521e-07 ( -7.98977e-08  8.21263e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.67113     (     )
Epeak [keV] : 219.640      (   )
Norm@50keV  : 4.28983E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.88 using 59 PHA bins.
# Reduced chi-squared =         0.9264 for     56 degrees of freedom 
# Null hypothesis probability =   6.314770e-01
 
Photon flux (15-150 keV)    in 53.06 sec: 0.148204 ( -0.018095  0.018084 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.13562e-07 ( -7.8975e-08  8.30129e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.45689   ( 1.45828   1.45828 )
beta        : -1.84952    ( 1.84957   0.242476 )
Epeak [keV] : 18.5103      ( -18.0099 -18.0099 )
Norm@50keV   : 2.62049E-03    ( -0.00263381   2.26575 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.95 using 59 PHA bins.
# Reduced chi-squared =         0.9445 for     55 degrees of freedom 
# Null hypothesis probability =   5.918986e-01
 
Photon flux (15-150 keV)    in 53.06 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)  = 9.81e-07
S(50-100 keV) = 9.35e-07

T90 vs. Hardness ratio plot

T90                                   = 139.947999954224 sec.
Hardness ratio (energy fluence ratio) = 0.953109

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.978766
Count Ratio (50-100 keV) / (15-25 keV) = 0.452655

Mask shadow pattern

IMX = -1.186397458794859E-01, IMY = 2.507270633167256E-02

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

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:
-239.000000 19.444000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
202.5169  77.7383    2.7  56.9  179.3   5.7424   4.3 ------	UNKNOWN                       
202.0581  -3.6541    2.4  29.4  -38.4   1.0416   4.7 ------	UNKNOWN                       
218.1372  37.5163    2.9  31.9 -132.4   1.2126   4.0 ------	UNKNOWN                       
222.6316  -3.6942    3.1  43.5  -64.0   4.0705   3.7 ------	UNKNOWN

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

Time interval of the image:
19.444000 72.500590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
188.4953  27.9396    1.0   6.9 -168.1   1.0169  11.9 ------	UNKNOWN                       
199.2202   5.7921    2.3  20.0  -45.6   0.4536   5.1 ------	UNKNOWN                       
218.8644  34.3508    2.1  31.5 -126.3   0.6100   5.4 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
100.500600 963.089600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
185.2684  50.6567    2.6  22.9  163.0   2.1826   4.5 ------	UNKNOWN                       
174.5320 -27.1631    2.9  56.7    3.1  11.7539   4.0 ------	UNKNOWN                       
188.5346  27.9736    1.5   0.1 -153.8   3.5823   7.6 ------	UNKNOWN                       
184.4347  -6.8497    4.2  35.0   -4.8   1.7508   2.8 ------	UNKNOWN                       
210.8282  23.5389    3.6  20.6  -94.6   1.7161   3.2 ------	UNKNOWN                       
224.6229  39.4504    2.8  32.0 -132.4   3.1579   4.2 ------	UNKNOWN                       
206.4708  -4.7740    3.7  37.0  -42.5   2.4703   3.2 ------	UNKNOWN                       
238.7867  29.4084    2.9  43.8 -116.3  10.5489   4.0 ------	UNKNOWN                       
236.6337  25.8331    2.7  42.7 -110.6  10.3436   4.5 ------	UNKNOWN                       
236.4966  25.4514    3.7  42.7 -110.0   8.7700   3.8 ------	UNKNOWN

Plot creation:
Sat May 30 14:40:55 EDT 2015