batgrbproduct analysis for trigger=994389

batgrbproduct Analysis for Trigger=994389

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 v2.48
    Process Start Time (local time): Wed Oct 19 23:51:15 EDT 2022
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger994389
======================================================================

  Trigger: 00994389      Segment: 000

  BAT Trigger Time: 620786688   [s; MET]
      Trigger Stop: 620786689.024   [s; MET]
               UTC: 2020-09-03T00:44:22.432080    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 164.311253143984   Dec: 50.500692051524  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.74
     Image Trigger?:     NO
     Rate S/N Ratio:     43.7264222181509  [ if not an image trigger ]
     Image S/N Ratio:    17.74

  Flight Position:   [ source = BAT ]
    RA: 164.311253143984   Dec: 50.500692051524  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 164.312289776971   Dec: 50.4872607263471  [deg; J2000]  
        { 10h 57m 14.9s , +50d 29' 14.1" }
         +/- 0.759752937229253 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.35870962603962 [arcmin] (formal 1-sigma fit error)
    SNR: 45.0387571380637
 
  Angular difference between Flight and Ground position is 0.806850 arcmin
 
  Partial Coding Fraction: 0.6796875    [ including projection effects ]

  Duration
     T90: 22.9119999408722 +/- 7.35864474962099
        Measured from: -15.5520000457764
                   to: 7.35999989509583     [s; relative to TRIGTIME]
     T50: 5.54799997806549 +/- 0.687825536536594
        Measured from: -1.55200004577637
                   to: 3.99599993228912     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.144000053405762     
                   to: 1.14400005340576     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -19.1759999990463     
                   to: 10.87600004673     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.184777   1.703103   1.300645   0.196270
           0.045353   0.048389   0.043012   0.036242 [error]
 Peak      0.112691   0.167656   0.144286   0.025022
           0.009459   0.011187   0.010149   0.007278 [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 4.06e-07 7.24e-07 9.89e-07 2.79e-06 2.85e-06 4.90e-06   erg/cm2
              Error 2.56e-08 2.70e-08 4.41e-08 2.74e-07 1.07e-07 3.04e-07   erg/cm2
Peak flux Power-law 1.14e+00 1.22e+00 9.35e-01 1.17e+00 3.73e+00 4.46e+00   ph/cm2/s
              Error 1.37e-01 9.37e-02 8.15e-02 2.03e-01 2.69e-01 3.28e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.67e-07 7.54e-07 1.02e-06 1.41e-06 2.75e-06 3.55e-06   erg/cm2
              Error 3.15e-08 3.14e-08 4.88e-08 4.56e-07 1.19e-07 4.66e-07   erg/cm2
Peak flux Cutoff-PL 9.84e-01 1.31e+00 1.01e+00 5.72e-01 3.65e+00 3.88e+00   ph/cm2/s
              Error 1.64e-01 1.13e-01 9.79e-02 2.61e-01 2.75e-01 3.73e-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    1.550    0.063    -      -           1.01e-02 3.51e-04   63.650 57
CPL   1.040    0.264      97.1   31.2      1.79e-02 5.25e-03   51.390 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.387    0.116    -      -           3.08e-02 2.21e-03   58.060 57
CPL   0.638    0.506      94.6   46.7      7.19e-02 4.36e-02   50.460 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: 12.992000 sec.
T50 in the 50-300 keV band: 5.120000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   30.052  -19.176   10.876
T90    22.912  -15.552    7.360
T50     5.548   -1.552    3.996
Peak    1.000    0.144    1.144

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
  164.3123    50.4873   0.0043    26.7965   -45.3375         4.5626258     45.039 TRIG_00994389                 
 
Foreground time interval of the image:
-19.176  10.876 (delta_t =  30.052 [sec])
Background time interval of the image:
-239.000 -19.176 (delta_t = 219.824 [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  -19.176 sec. to   10.876 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.55040     ( -0.0624645   0.0626394 )
Norm@50keV  : 1.00950E-02    ( -0.000351434   0.000351111 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.65     using 59 bins.
 Reduced chi-squared = 1.11667
# Null hypothesis probability of 2.54e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 30.05 sec: 1.27815 ( -0.04652  0.0466 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.85604e-06 ( -1.06474e-07  1.06772e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -19.176 sec. to   10.876 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.04006     ( -0.271785   0.256043 )
Epeak [keV] : 97.0968      ( -17.3636 45.1216 )
Norm@50keV  : 1.78597E-02    ( -0.00434387   0.0061554 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.39     using 59 bins.
 Reduced chi-squared = 0.917679
# Null hypothesis probability of 6.50e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 30.05 sec: 1.23822 ( -0.05015  0.05025 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.74843e-06 ( -1.19286e-07  1.19209e-07 ) ergs/cm2

Band function

Time interval is from  -19.176 sec. to   10.876 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 15.3499  (  )
R^2/D10^2   : 0.129821  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                  195.07     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 5.32e-17 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.917e-07   1.247e-08
25- 50  7.777e-07   3.576e-08
50-150  1.260e-06   8.519e-08
15-150  2.229e-06   9.316e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-31.1647      -200)
Norm        : 5.19189       (-0.177785     0.177785)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   53.41     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.11e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.888e-07   1.442e-08
25- 50  7.479e-07   2.840e-08
50-150  1.640e-06   6.235e-08
15-150  2.777e-06   9.886e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.89682        (-0.865348      0.965303)
R1^2/D10^2  : 1.28560        (-0.45254      0.774895)
kT2 [keV]   : 23.9129        (-2.36442      3.19098)
R2^2/D10^2  : 2.16201E-02    (-0.0082008   0.0107433)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   48.70     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 7.13e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.567e-07   4.746e-08
25- 50  7.527e-07   6.927e-08
50-150  1.621e-06   1.808e-07
15-150  2.730e-06   2.778e-07

Peak spectrum fit

Power-law model

Time interval is from    0.144 sec. to    1.144 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.38699     ( -0.115131   0.115986 )
Norm@50keV  : 3.07570E-02    ( -0.00221539   0.00221109 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   58.06     using 59 bins.
 Reduced chi-squared = 1.0186
# Null hypothesis probability of 4.36e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 3.73478 ( -0.26884  0.269 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.9803e-07 ( -2.36895e-08  2.38396e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.144 sec. to    1.144 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.638475     ( -0.535187   0.477403 )
Epeak [keV] : 94.6219      ( -20.5581 72.8445 )
Norm@50keV  : 7.19407E-02    ( -0.0295031   0.0577259 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   50.46     using 59 bins.
 Reduced chi-squared = 0.901071
# Null hypothesis probability of 6.84e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 1 sec: 3.65006 ( -0.27467  0.27458 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.86952e-07 ( -2.50433e-08  2.51309e-08 ) ergs/cm2

Band function

Time interval is from    0.144 sec. to    1.144 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 16.4226  (-1.35946  1.49988)
R^2/D10^2   : 0.330576  (-0.0860554   0.114337)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   79.86     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.45e-02 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.832e-08   2.495e-09
25- 50  7.881e-08   7.485e-09
50-150  1.500e-07   1.960e-08
15-150  2.471e-07   2.110e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-25.9316      -200)
Norm        : 15.4617       (-1.09643     1.09643)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   59.21     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 3.95e-01 with 57 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.850e-08   3.185e-09
25- 50  7.405e-08   6.925e-09
50-150  1.624e-07   4.228e-08
15-150  2.750e-07   4.440e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.93117        (-1.96341      2.35535)
R1^2/D10^2  : 3.07171        (-1.78728      6.61933)
kT2 [keV]   : 23.6080        (-3.79311      6.55797)
R2^2/D10^2  : 7.72518E-02    (-0.0473595   0.0917552)
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   49.54     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.82e-01 with 55 degrees of freedom
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.117e-08   1.300e-08
25- 50  7.392e-08   2.583e-08
50-150  1.813e-07   6.098e-08
15-150  2.864e-07   8.950e-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: 1.55040     ( -0.0624645   0.0626394 )
Norm@50keV  : 1.00950E-02    ( -0.000351434   0.000351111 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   63.65     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 2.54e-01 with 57 degrees of freedom
 
Photon flux (15-150 keV)    in 30.05 sec: 1.27811 ( -0.0465055  0.0465999 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.85565e-06 ( -1.06476e-07  1.06776e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.04006     ( -0.271786   0.256042 )
Epeak [keV] : 97.0969      ( -17.3637 45.1215 )
Norm@50keV  : 1.78597E-02    ( -0.00434384   0.00615543 )
------------------------------------------------------------
#Fit statistic  : Chi-Squared                   51.39     using 59 bins.
 Reduced chi-squared = 
# Null hypothesis probability of 6.50e-01 with 56 degrees of freedom
 
Photon flux (15-150 keV)    in 30.05 sec: 1.23808 ( -0.05014  0.05023 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.74942e-06 ( -1.19368e-07  1.19295e-07 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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)  = 7.24e-07
S(50-100 keV) = 9.89e-07

T90 vs. Hardness ratio plot

T90                                   = 22.9119999408722 sec.
Hardness ratio (energy fluence ratio) = 1.36602

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.43749
Count Ratio (50-100 keV) / (15-25 keV) = 1.0978

Mask shadow pattern

IMX = 3.550219012562849E-01, IMY = 3.592294551720819E-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:
-239.000000 -19.176000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4502  35.2344    3.6  36.9  135.7   1.7203   3.2    6.5	Her X-1                       
256.5523  22.4676    3.0  47.8  145.9   4.2275   3.8 ------	UNKNOWN                       
106.7935  58.6393    2.8  51.0   -6.9   2.1534   4.2 ------	UNKNOWN                       
107.7589  50.4990    3.3  56.3  -14.7   3.3691   3.5 ------	UNKNOWN

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

Time interval of the image:
-19.176000 10.876000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3048  35.4572    3.9  36.6  135.6   0.4979   2.9   10.2	Her X-1                       
164.3123  50.4873    0.3  26.8  -45.3   4.5614  45.0 ------	UNKNOWN                       
162.7418  40.3953    1.9  33.2  -61.2   0.8298   5.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
172.100590 853.200600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9711 -15.6495    0.8  40.1  -52.5  21.3602  15.0    0.7	Sco X-1                       
255.7963 -37.8590  137.2  22.0  -85.2   0.0685   0.1    9.1	4U 1700-377                   
256.4561 -36.4257    8.3  21.7  -81.2   1.0910   1.4    1.0	GX 349+2                      
263.0142 -24.7482    5.6  21.2  -45.3   1.5068   2.1    0.3	GX 1+4                        
264.7448 -44.4409  169.3  16.2 -108.2  -0.0480  -0.1    0.6	4U 1735-44                    
268.2468  -1.4484   10.0  37.9   -9.1   1.0961   1.1    7.3	SW J1753.5-0127               
270.3409 -25.0996    2.3  16.2  -31.7   3.1925   5.1    3.3	GX 5-1                        
270.3105 -25.6903    2.3  15.7  -33.2   3.4733   5.5    3.2	GRS 1758-258                  
274.0300 -14.0873    6.2  24.1   -6.8   1.3215   1.9    3.4	GX 17+2                       
275.7977 -30.2938    5.5   9.1  -31.3   1.4229   2.1    7.9	H1820-303                     
284.8310 -24.8200    0.0  11.9   22.0   0.3707   0.6   12.7	HT1900.1-2455                 
288.7129  10.8787  446.7  47.8   23.2  -0.0440  -0.0    6.4	GRS 1915+105                  
262.9524 -33.6927   19.8  17.1  -69.7   0.4328   0.6    8.7	GX 354-0                      
324.1951 -28.2280    4.1  35.0  104.4   4.3900   2.8 ------	UNKNOWN                       
 17.6941 -71.3262    3.0  56.8  173.9  15.9924   3.9 ------	UNKNOWN                       
260.3880  13.8096    3.8  55.0  -11.5   5.4792   3.0 ------	UNKNOWN                       
255.0836 -41.5595    2.2  22.5  -95.0   4.3416   5.4 ------	UNKNOWN

Plot creation:
Thu Oct 20 00:51:49 EDT 2022