batgrbproduct analysis for trigger=820513

batgrbproduct Analysis for Trigger=820513

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): Wed May 30 15:52:41 EDT 2018
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger820513
======================================================================

  Trigger: 00820513      Segment: 000

  BAT Trigger Time: 544203540.032   [s; MET]
      Trigger Stop: 544203542.08   [s; MET]
               UTC: 2018-03-31T15:38:39.320160    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 196.819900496289   Dec: 61.7250399854159  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.48
     Image Trigger?:     NO
     Rate S/N Ratio:     21.6794833886788  [ if not an image trigger ]
     Image S/N Ratio:    9.48

  Flight Position:   [ source = BAT ]
    RA: 196.819900496289   Dec: 61.7250399854159  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 196.799942170466   Dec: 61.7253167959102  [deg; J2000]  
        { 13h 07m 12.0s , +61d 43' 31.1" }
         +/- 1.68461575624069 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.532222162632814 [arcmin] (formal 1-sigma fit error)
    SNR: 14.4392862205162
 
  Angular difference between Flight and Ground position is 0.567500 arcmin
 
  Partial Coding Fraction: 0.3046875    [ including projection effects ]

  Duration
     T90: 78.0320000648499 +/- 4.7389450045999
        Measured from: -20.1679999828339
                   to: 57.864000082016     [s; relative to TRIGTIME]
     T50: 20.432000041008 +/- 7.35756471371748
        Measured from: -13.3679999113083
                   to: 7.06400012969971     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.98800003528595     
                   to: 1.98800003528595     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -21.3839999437332     
                   to: 62.4240000247955     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.361262   1.236563   0.520607   0.070868
           0.089865   0.092563   0.079495   0.068487 [error]
 Peak      0.121067   0.128716   0.065386   0.003289
           0.012308   0.012621   0.010284   0.007660 [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 4.58e-07 5.30e-07 4.41e-07 6.18e-07 1.65e-06 2.04e-06   erg/cm2
              Error 5.46e-08 4.71e-08 7.51e-08 2.04e-07 1.70e-07 2.94e-07   erg/cm2
Peak flux Power-law 1.30e+00 9.39e-01 4.51e-01 3.06e-01 2.83e+00 2.99e+00   ph/cm2/s
              Error 2.01e-01 1.05e-01 8.10e-02 1.02e-01 3.19e-01 3.36e-01   ph/cm2/s
 
Fluence   Cutoff-PL -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux Cutoff-PL 1.18e+00 1.07e+00 4.41e-01 8.37e-02 2.76e+00 2.77e+00   ph/cm2/s
              Error 2.27e-01 1.54e-01 1.02e-01 1.23e-01 3.25e-01 3.39e-01   ph/cm2/s
 
Fluence        Band 4.58e-07 5.54e-07 4.69e-07 4.82e-07 1.11e-06 1.05e-06   erg/cm2
              Error 4.17e-08 6.42e-08 8.69e-08 2.48e-07 1.90e-07 4.25e-07   erg/cm2
Peak flux      Band 1.96e+00 1.10e+00 4.63e-01 1.60e-01 2.52e+00 2.52e+00   ph/cm2/s
              Error 2.33e-01 1.65e-01 7.86e-02 1.34e-01 3.23e-01 3.61e-01   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.265    0.180    -      -           2.07e-03 2.54e-04   41.560 57
CPL   1.916    0.451       9.5   19.4      3.34e-03 0.00e+00   40.860 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.058    0.196    -      -           1.84e-02 2.55e-03   67.840 57
CPL   0.969    1.043      38.9   15.9      7.99e-02 2.08e-01   63.520 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: 5.312000 sec.
T50 in the 50-300 keV band: 2.944000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   83.808  -21.384   62.424
T90    78.032  -20.168   57.864
T50    20.432  -13.368    7.064
Peak    1.000    0.988    1.988

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  196.7999    61.7253   0.0133    34.3464   -67.5790         3.2061141     14.439 TRIG_00820513                 
 
Foreground time interval of the image:
-21.384  62.424 (delta_t =  83.808 [sec])
Background time interval of the image:
-169.731 -21.384 (delta_t = 148.347 [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 2.048000

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 2.048000

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 2.048000

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  -21.384 sec. to   62.424 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.26531     ( -0.174355   0.184784 )
Norm@50keV  : 2.07414E-03    ( -0.000256724   0.000251502 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.56 using 59 PHA bins.
# Reduced chi-squared =         0.7291 for     57 degrees of freedom 
# Null hypothesis probability =   9.380130e-01
 
Photon flux (15-150 keV)    in 83.81 sec: 0.355650 ( -0.030641  0.030655 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.65138e-06 ( -1.68189e-07  1.71663e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -21.384 sec. to   62.424 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.91626     ( -0.818365   0.0836657 )
Epeak [keV] : 9.53149      ( -7.58427 31.2619 )
Norm@50keV  : 3.34389E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.86 using 59 PHA bins.
# Reduced chi-squared =         0.7296 for     56 degrees of freedom 
# Null hypothesis probability =   9.357758e-01
 
Photon flux (15-150 keV)    in 83.81 sec: 0.355296 ( -0.030507  0.016061 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

Time interval is from  -21.384 sec. to   62.424 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.99279   ( 1.9928   1.9928 )
beta        : -3.12901    ( 2.55012   12.528 )
Epeak [keV] : 1.03705      ( -0.599252 3.25574 )
Norm@50keV   : 3.02221E-03    ( -0.000259745   0.000256678 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.88 using 59 PHA bins.
# Reduced chi-squared =         0.7433 for     55 degrees of freedom 
# Null hypothesis probability =   9.217595e-01
 
Photon flux (15-150 keV)    in 83.81 sec: 0.355650 ( -0.030641  0.030655 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.10333e-06 ( 4.07184e-07  7.86597e-07 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 8.67713  (-0.893056  0.980668)
R^2/D10^2   : 0.272009  (-0.094798   0.149093)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.08 using 59 PHA bins.
# Reduced chi-squared =          1.212 for     57 degrees of freedom 
# Null hypothesis probability =   1.310731e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.275e-07   4.970e-08
25- 50  6.569e-07   7.673e-08
50-150  2.238e-07   5.984e-08
15-150  1.208e-06   1.270e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 44.9868       (-9.56057      13.6966)
Norm        : 2.11011       (-0.328141     0.419758)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.37 using 59 PHA bins.
# Reduced chi-squared =         0.7434 for     57 degrees of freedom 
# Null hypothesis probability =   9.257508e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.210e-07   5.192e-08
25- 50  5.813e-07   5.691e-08
50-150  5.089e-07   1.254e-07
15-150  1.511e-06   1.659e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.07743        (-1.1217      1.47902)
R1^2/D10^2  : 4.06041        (-2.8884      9.71206)
kT2 [keV]   : 13.5524        (-2.64337      4.9991)
R2^2/D10^2  : 3.50576E-02    (-0.026306   0.0564743)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          42.00 using 59 PHA bins.
# Reduced chi-squared =         0.7637 for     55 degrees of freedom 
# Null hypothesis probability =   9.011214e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.536e-07   2.153e-07
25- 50  5.406e-07   1.954e-07
50-150  4.907e-07   2.407e-07
15-150  1.485e-06   5.525e-07

Peak spectrum fit

Power-law model

Time interval is from    0.988 sec. to    1.988 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.05842     ( -0.190234   0.202656 )
Norm@50keV  : 1.83529E-02    ( -0.00257374   0.00251763 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.84 using 59 PHA bins.
# Reduced chi-squared =          1.190 for     57 degrees of freedom 
# Null hypothesis probability =   1.542529e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.82977 ( -0.31871  0.31881 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.6993e-07 ( -2.19544e-08  2.22464e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.988 sec. to    1.988 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.968682     ( -1.19233   0.894361 )
Epeak [keV] : 38.8503      ( -18.4369 13.3863 )
Norm@50keV  : 7.98876E-02    ( -0.079896   0.335271 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.52 using 59 PHA bins.
# Reduced chi-squared =          1.134 for     56 degrees of freedom 
# Null hypothesis probability =   2.286706e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.75883 ( -0.32484  0.32492 ) ph/cm2/s
Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2

Band function

Time interval is from    0.988 sec. to    1.988 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.495462   ( -1.17105   0.604524 )
beta        : -2.68463    ( 2.68405   0.60541 )
Epeak [keV] : 35.8061      ( -13.4761 13.5562 )
Norm@50keV   : 0.167569    ( -0.117484   1249.37 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.01 using 59 PHA bins.
# Reduced chi-squared =          1.146 for     55 degrees of freedom 
# Null hypothesis probability =   2.139804e-01
 
Photon flux (15-150 keV)    in 1 sec: 2.52499 ( -0.07681  0.56933 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.00442e-08 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 9.66572  (-1.09593  1.24748)
R^2/D10^2   : 1.55383  (-0.591983   0.935237)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          73.14 using 59 PHA bins.
# Reduced chi-squared =          1.283 for     57 degrees of freedom 
# Null hypothesis probability =   7.357533e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.920e-08   5.545e-09
25- 50  6.913e-08   1.022e-08
50-150  3.267e-08   9.615e-09
15-150  1.310e-07   1.870e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 59.5474       (-15.6655      24.3595)
Norm        : 15.0934       (-2.6083     3.05067)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.83 using 59 PHA bins.
# Reduced chi-squared =          1.120 for     57 degrees of freedom 
# Null hypothesis probability =   2.490617e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.789e-08   5.530e-09
25- 50  5.753e-08   7.015e-09
50-150  6.505e-08   1.911e-08
15-150  1.605e-07   2.390e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.04841        (-2.57605      2.73816)
R1^2/D10^2  : 6.04266        (-4.02868      36.8137)
kT2 [keV]   : 16.4915        (-5.32095      32.687)
R2^2/D10^2  : 0.122240    (-0.119879   0.469127)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.57 using 59 PHA bins.
# Reduced chi-squared =          1.156 for     55 degrees of freedom 
# Null hypothesis probability =   2.001361e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.654e-08   1.888e-08
25- 50  5.961e-08   3.148e-08
50-150  5.948e-08   3.606e-08
15-150  1.556e-07   8.035e-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: 2.26531     ( -0.174355   0.184784 )
Norm@50keV  : 2.07414E-03    ( -0.000256724   0.000251502 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          41.56 using 59 PHA bins.
# Reduced chi-squared =         0.7291 for     57 degrees of freedom 
# Null hypothesis probability =   9.380130e-01
 
Photon flux (15-150 keV)    in 83.81 sec: 0.355612 ( -0.0306366  0.0306508 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.65102e-06 ( -1.68392e-07  1.71683e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.92348     ( -0.823112   0.0572473 )
Epeak [keV] : 8.88535      ( -8.13176 32.807 )
Norm@50keV  : 3.31202E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.86 using 59 PHA bins.
# Reduced chi-squared =         0.7296 for     56 degrees of freedom 
# Null hypothesis probability =   9.357750e-01
 
Photon flux (15-150 keV)    in 83.81 sec: 0.350424 ( -0.032311  0.032268 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.59248e-06 ( -1.97976e-07  2.06684e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.99279   ( 1.9928   1.9928 )
beta        : -3.12901    ( 2.55012   12.528 )
Epeak [keV] : 1.03705      ( -0.599252 3.25574 )
Norm@50keV   : 3.02221E-03    ( -0.000259745   0.000256678 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          40.88 using 59 PHA bins.
# Reduced chi-squared =         0.7433 for     55 degrees of freedom 
# Null hypothesis probability =   9.217595e-01
 
Photon flux (15-150 keV)    in 83.81 sec: 0.355650 ( -0.030641  0.030655 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.10333e-06 ( 4.07184e-07  7.86597e-07 ) ergs/cm2

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

S(25-50 keV)  = 5.30e-07
S(50-100 keV) = 4.41e-07

T90 vs. Hardness ratio plot

T90                                   = 78.0320000648499 sec.
Hardness ratio (energy fluence ratio) = 0.832075

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.908395
Count Ratio (50-100 keV) / (15-25 keV) = 0.382444

Mask shadow pattern

IMX = 2.606323414161451E-01, IMY = 6.316842637770844E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

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:
-169.731400 -21.384000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
120.2998  35.7109    2.8  49.9 -148.0   1.8475   4.2 ------	UNKNOWN                       
132.0041  51.5873    2.7  41.7 -125.6   1.4333   4.3 ------	UNKNOWN

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

Time interval of the image:
-21.384000 62.424000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
141.4936  -2.3870    2.3  48.5  154.2   1.7816   4.9 ------	UNKNOWN                       
207.3811  58.1850    2.2  34.6  -56.3   1.0002   5.3 ------	UNKNOWN                       
196.7999  61.7253    0.8  34.3  -67.6   3.2060  14.4 ------	UNKNOWN                       
207.6000  68.9213    2.1  42.8  -67.5   2.5563   5.6 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
647.768590 963.032000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3056  35.3271    3.9  44.2    2.0   1.2648   3.0    7.5	Her X-1                       
212.1788  50.8815    3.9  13.7   37.9   0.7515   2.9 ------	UNKNOWN                       
141.4465  45.2632    3.2  35.4  171.3   1.2845   3.6 ------	UNKNOWN                       
261.6202  36.4052    2.3  46.8   -5.6   2.4015   5.0 ------	UNKNOWN                       
279.2533  49.2096    6.1  45.0  -30.8   0.8610   1.9 ------	UNKNOWN                       
 71.2542  85.0536    2.8  31.4 -105.0   1.8934   4.2 ------	UNKNOWN                       
 75.4986  62.6501    2.9  48.0 -129.1   6.1071   4.0 ------	UNKNOWN

Plot creation:
Wed May 30 17:10:06 EDT 2018