batgrbproduct analysis for trigger=430172

batgrbproduct Analysis for Trigger=430172

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 Jan 17 16:59:12 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger430172
======================================================================

  Trigger: 00430172      Segment: 000

  BAT Trigger Time: 302005921.856   [s; MET]
      Trigger Stop: 302005922.88   [s; MET]
               UTC: 2010-07-28T10:31:55.829200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 44.0530055621985   Dec: 0.27954807728338  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.07
     Image Trigger?:     NO
     Rate S/N Ratio:     22.4499443206436  [ if not an image trigger ]
     Image S/N Ratio:    9.07

  Flight Position:   [ source = BAT ]
    RA: 44.0530055621985   Dec: 0.27954807728338  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 44.050972895668   Dec: 0.296290443876571  [deg; J2000]  
        { 02h 56m 12.2s , +00d 17' 46.6" }
         +/- 1.48438603528959 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.378504934007746 [arcmin] (formal 1-sigma fit error)
    SNR: 17.3002124815293
 
  Angular difference between Flight and Ground position is 1.011918 arcmin
 
  Partial Coding Fraction: 0.1132812    [ including projection effects ]

  Duration
     T90: 12.0800000429153 +/- 2.73632743473403
        Measured from: -1.28000003099442
                   to: 10.8000000119209     [s; relative to TRIGTIME]
     T50: 4.24000006914139 +/- 1.32715634477846
        Measured from: 0.191999971866608
                   to: 4.432000041008     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.65200001001358     
                   to: 0.34799998998642     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.74400001764297     
                   to: 13.1999999880791     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.551394   0.929337   0.752256   0.234375
           0.063173   0.068249   0.060173   0.049528 [error]
 Peak      0.067621   0.175138   0.128493   0.041964
           0.017676   0.021196   0.018313   0.014161 [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 2.36e-07 4.22e-07 5.79e-07 1.65e-06 1.67e-06 2.88e-06   erg/cm2
              Error 3.41e-08 3.71e-08 5.91e-08 3.64e-07 1.45e-07 4.05e-07   erg/cm2
Peak flux Power-law 1.17e+00 1.16e+00 7.97e-01 8.67e-01 3.47e+00 3.99e+00   ph/cm2/s
              Error 2.85e-01 1.85e-01 1.39e-01 2.89e-01 5.34e-01 5.90e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.27e-07 4.30e-07 5.90e-07 1.24e-06 1.65e-06 2.49e-06   erg/cm2
              Error 4.06e-08 4.31e-08 6.69e-08 -------- 1.52e-07 7.00e-07   erg/cm2
Peak flux Cutoff-PL 9.35e-01 1.33e+00 9.01e-01 2.70e-01 3.38e+00 3.44e+00   ph/cm2/s
              Error 3.27e-01 2.46e-01 1.72e-01 2.70e-01 5.40e-01 5.85e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 9.44e-01 1.32e+00 9.02e-01 2.88e-01 3.39e+00 3.46e+00   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    1.543    0.141    -      -           1.19e-02 9.68e-04   52.670 57
CPL   1.341    0.460     173.2    0.0      1.48e-02 1.41e-02   52.270 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.536    0.225    -      -           2.75e-02 4.10e-03   48.580 57
CPL   0.157    1.217      66.4   34.4      1.40e-01 3.56e-01   43.100 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: 13.184000 sec.
T50 in the 50-300 keV band: 5.568000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   14.944   -1.744   13.200
T90    12.080   -1.280   10.800
T50     4.240    0.192    4.432
Peak    1.000   -0.652    0.348

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
   44.0510     0.2963   0.0111    46.8548   146.2842         2.5566847     17.300 TRIG_00430172                 
 
Foreground time interval of the image:
 -1.744  13.200 (delta_t =  14.944 [sec])
Background time interval of the image:
-239.856  -1.744 (delta_t = 238.112 [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)

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   -1.744 sec. to   13.200 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.54334     ( -0.14059   0.141504 )
Norm@50keV  : 1.18576E-02    ( -0.00096912   0.000966135 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.67 using 59 PHA bins.
# Reduced chi-squared =         0.9241 for     57 degrees of freedom 
# Null hypothesis probability =   6.379863e-01
 
Photon flux (15-150 keV)    in 14.94 sec: 1.49822 ( -0.128272  0.128652 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.66934e-06 ( -1.44611e-07  1.45108e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -1.744 sec. to   13.200 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34147     ( -0.595244   0.324934 )
Epeak [keV] : 173.180      ( -173.18 -173.18 )
Norm@50keV  : 1.48494E-02    ( -0.0148494   0.0134432 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.27 using 59 PHA bins.
# Reduced chi-squared =         0.9335 for     56 degrees of freedom 
# Null hypothesis probability =   6.166998e-01
 
Photon flux (15-150 keV)    in 14.94 sec: 1.48422 ( -0.13108  0.13359 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.65344e-06 ( -1.52851e-07  1.5185e-07 ) ergs/cm2

Band function

Time interval is from   -1.744 sec. to   13.200 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.21004   ( 1.21855   1.21855 )
beta        : -1.67004    ( 1.66703   0.253165 )
Epeak [keV] : 110.014      ( -115.318 729.226 )
Norm@50keV   : 1.77253E-02    ( -0.0059733   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.27 using 59 PHA bins.
# Reduced chi-squared =         0.9503 for     55 degrees of freedom 
# Null hypothesis probability =   5.797664e-01
 
Photon flux (15-150 keV)    in 14.94 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]    : 15.8084  (-1.57802  1.7792)
R^2/D10^2   : 0.139650  (-0.0442978   0.0638203)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          89.67 using 59 PHA bins.
# Reduced chi-squared =          1.573 for     57 degrees of freedom 
# Null hypothesis probability =   3.724520e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.081e-07   1.723e-08
25- 50  4.501e-07   5.431e-08
50-150  7.826e-07   1.095e-07
15-150  1.341e-06   1.425e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 6.12327       (-0.494365     0.494328)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.56 using 59 PHA bins.
# Reduced chi-squared =         0.9221 for     57 degrees of freedom 
# Null hypothesis probability =   6.422745e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.278e-07   2.219e-08
25- 50  4.383e-07   1.025e-07
50-150  9.613e-07   3.456e-07
15-150  1.627e-06   3.453e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.41640        (-2.07367      2.37815)
R1^2/D10^2  : 1.28281        (-0.746978      2.76154)
kT2 [keV]   : 27.6246        (-6.42911      15.4041)
R2^2/D10^2  : 1.51986E-02    (-0.0117735   0.0154577)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.29 using 59 PHA bins.
# Reduced chi-squared =         0.9871 for     55 degrees of freedom 
# Null hypothesis probability =   5.017833e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.076e-07   8.844e-08
25- 50  4.432e-07   1.342e-07
50-150  9.950e-07   4.882e-07
15-150  1.646e-06   5.428e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.652 sec. to    0.348 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.53579     ( -0.224616   0.225057 )
Norm@50keV  : 2.75375E-02    ( -0.0041068   0.00409865 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.58 using 59 PHA bins.
# Reduced chi-squared =         0.8522 for     57 degrees of freedom 
# Null hypothesis probability =   7.787775e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.47196 ( -0.533584  0.535363 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.59775e-07 ( -4.05976e-08  4.08151e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.652 sec. to    0.348 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.157102     ( -1.39283   1.04166 )
Epeak [keV] : 66.4254      ( -14.1655 54.6931 )
Norm@50keV  : 0.140040    ( -0.140041   0.572292 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.10 using 59 PHA bins.
# Reduced chi-squared =         0.7697 for     56 degrees of freedom 
# Null hypothesis probability =   8.966477e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.37547 ( -0.53902  0.54125 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.45163e-07 ( -4.2244e-08  4.2866e-08 ) ergs/cm2

Band function

Time interval is from   -0.652 sec. to    0.348 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.86047   ( -5.74269   -4.86047 )
beta        : -1.97293    ( -0.55545   0.343751 )
Epeak [keV] : 34.7050      ( -5.50552 6.60128 )
Norm@50keV   : 369.949    ( -53.1866   1396.95 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.74 using 59 PHA bins.
# Reduced chi-squared =         0.7589 for     55 degrees of freedom 
# Null hypothesis probability =   9.062617e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.38555 (    ) 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]    : 14.5349  (-2.04462  2.47908)
R^2/D10^2   : 0.476564  (-0.212155   0.353537)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.04 using 59 PHA bins.
# Reduced chi-squared =         0.8252 for     57 degrees of freedom 
# Null hypothesis probability =   8.239277e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.118e-08   5.605e-09
25- 50  8.170e-08   1.771e-08
50-150  1.158e-07   3.234e-08
15-150  2.186e-07   4.145e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 189.966       (      )
Norm        : 14.4960       (-2.17034     2.56847)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.17 using 59 PHA bins.
# Reduced chi-squared =         0.8100 for     57 degrees of freedom 
# Null hypothesis probability =   8.469397e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.600e-08   2.063e-08
25- 50  6.922e-08   3.802e-08
50-150  1.515e-07   8.345e-08
15-150  2.568e-07   1.423e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.75531        (-4.15413      4.03244)
R1^2/D10^2  : 1.30393        (-0.806687      1.62739)
kT2 [keV]   : 27.4961        (-21.839      -27.4211)
R2^2/D10^2  : 2.79568E-02    (-0.0280622   0.253997)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.79 using 59 PHA bins.
# Reduced chi-squared =         0.7598 for     55 degrees of freedom 
# Null hypothesis probability =   9.053070e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.853e-08   1.645e-08
25- 50  8.080e-08   4.507e-08
50-150  1.429e-07   7.380e-08
15-150  2.522e-07   1.278e-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: 1.54334     ( -0.14059   0.141504 )
Norm@50keV  : 1.18576E-02    ( -0.00096912   0.000966135 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.67 using 59 PHA bins.
# Reduced chi-squared =         0.9241 for     57 degrees of freedom 
# Null hypothesis probability =   6.379863e-01
 
Photon flux (15-150 keV)    in 14.94 sec: 1.49822 ( -0.128272  0.128652 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.66934e-06 ( -1.44611e-07  1.45108e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34147     ( -0.595244   0.324934 )
Epeak [keV] : 173.180      ( -173.18 -173.18 )
Norm@50keV  : 1.48494E-02    ( -0.0148494   0.0134432 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.27 using 59 PHA bins.
# Reduced chi-squared =         0.9335 for     56 degrees of freedom 
# Null hypothesis probability =   6.166998e-01
 
Photon flux (15-150 keV)    in 14.94 sec: 1.48422 ( -0.13108  0.13359 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.65344e-06 ( -1.52851e-07  1.5185e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.21004   ( 1.21855   1.21855 )
beta        : -1.67004    ( 1.66703   0.253165 )
Epeak [keV] : 110.014      ( -115.318 729.229 )
Norm@50keV   : 1.77253E-02    ( -0.0059733   0 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.27 using 59 PHA bins.
# Reduced chi-squared =         0.9503 for     55 degrees of freedom 
# Null hypothesis probability =   5.797664e-01
 
Photon flux (15-150 keV)    in 14.94 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)  = 4.22e-07
S(50-100 keV) = 5.79e-07

T90 vs. Hardness ratio plot

T90                                   = 12.0800000429153 sec.
Hardness ratio (energy fluence ratio) = 1.37204

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.68543
Count Ratio (50-100 keV) / (15-25 keV) = 1.36428

Mask shadow pattern

IMX = -8.874768828778155E-01, IMY = -5.922265412191633E-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:
-239.856000 -1.744000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6429  22.0213    0.3  37.6 -146.8   9.2403  36.9    0.7	Crab                          
135.4927 -40.5278    2.3  47.6   -7.5   1.8244   5.0    2.3	Vela X-1                      
 82.6387 -48.9023    2.5  34.0   48.3   1.4171   4.7 ------	UNKNOWN                       
135.7243 -23.4102    3.9  44.8  -31.0   0.9662   2.9 ------	UNKNOWN                       
 84.7293  26.3326    1.5  41.8 -144.4   2.3260   7.7 ------	UNKNOWN

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

Time interval of the image:
-1.744000 13.200000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.4242  22.0208   12.8  37.7 -147.1  -0.0472  -0.9   11.6	Crab                          
135.4396 -40.6339    3.5  47.6   -7.3   0.2396   3.3    6.2	Vela X-1                      
 71.7737 -54.1356    2.1  41.1   56.1   0.6866   5.6 ------	UNKNOWN                       
 44.0510   0.2963    0.7  46.9  146.3   2.5568  17.3 ------	UNKNOWN                       
 59.5595   4.7369    2.2  35.2  163.4   0.2826   5.3 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
80.644600 267.644600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 46.5138  11.9331    1.9  11.9 -149.0   0.7779   6.1 ------	UNKNOWN                       
 80.1181   4.1283    3.2  36.2  -77.4   1.0970   3.6 ------	UNKNOWN                       
 82.7902  14.3509    3.1  40.8  -92.7   2.1760   3.7 ------	UNKNOWN

Plot creation:
Sun May 31 00:36:06 EDT 2015