batgrbproduct analysis for trigger=1215690

batgrbproduct Analysis for Trigger=1215690

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sat Feb 17 18:55:28 EST 2024
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1215690/GCN5_download_cron
======================================================================

  Trigger: 01215690      Segment: 000

  BAT Trigger Time: 729798416   [s; MET]
      Trigger Stop: 729798480   [s; MET]
               UTC: 2024-02-16T17:46:23.074000    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 300.851493289519   Dec: 35.0884227491367  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    17.28
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    17.28

  Flight Position:   [ source = BAT ]
    RA: 300.851493289519   Dec: 35.0884227491367  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 300.866509598429   Dec: 34.9631923574036  [deg; J2000]  
        { 20h 03m 28.0s , +34d 57' 47.5" }
         +/- 1.04045638678001 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.464801997759043 [arcmin] (formal 1-sigma fit error)
    SNR: 28.7417254470158
 
  Angular difference between Flight and Ground position is 7.549960 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 486.77999997139 +/- 23.6456543406438
        Measured from: -83.9599999189377
                   to: 402.820000052452     [s; relative to TRIGTIME]
     T50: 197.703999996185 +/- 15.1787483740335
        Measured from: 43.3800001144409
                   to: 241.084000110626     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 58.3320000171661     
                   to: 59.3320000171661     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -115.65600001812     
                   to: 494.595999956131     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     6.340762   7.699329   4.259478   0.835495
           0.157353   0.160368   0.134450   0.111807 [error]
 Peak      0.047092   0.021926   0.014948   0.009980
           0.006687   0.006903   0.005647   0.004679 [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 2.08e-06 3.06e-06 3.36e-06 6.94e-06 1.06e-05 1.54e-05   erg/cm2
              Error 1.10e-07 9.37e-08 1.40e-07 6.31e-07 3.26e-07 7.29e-07   erg/cm2
Peak flux Power-law 3.73e-01 2.44e-01 1.04e-01 6.03e-02 7.51e-01 7.81e-01   ph/cm2/s
              Error 1.08e-01 5.71e-02 5.05e-02 5.64e-02 1.58e-01 1.71e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.92e-06 3.16e-06 3.40e-06 3.79e-06 1.02e-05 1.23e-05   erg/cm2
              Error 1.39e-07 1.10e-07 1.48e-07 1.26e-06 3.96e-07 1.33e-06   erg/cm2
Peak flux Cutoff-PL 3.73e-01 2.44e-01 1.04e-01 5.99e-02 7.51e-01 7.81e-01   ph/cm2/s
              Error 1.07e-01 5.71e-02 5.04e-02 6.95e-02 1.58e-01 1.69e-01   ph/cm2/s
 
Fluence        Band 1.84e-06 3.21e-06 3.31e-06 5.45e-06 1.02e-05 1.38e-05   erg/cm2
              Error 1.61e-07 1.27e-07 1.61e-07 -------- 3.81e-07 --------   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    1.865    0.057    -      -           2.05e-03 6.28e-05   60.560 57
CPL   1.442    0.251      64.3   16.0      3.35e-03 9.76e-04   51.420 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.235    0.536    -      -           4.45e-03 1.62e-03   61.860 57
CPL   1.896    0.000      20.7    0.0      6.28e-03 0.00e+00   62.890 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: 0.000000 sec.
T50 in the 50-300 keV band: 0.000000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  610.252 -115.656  494.596
T90   486.780  -83.960  402.820
T50   197.704   43.380  241.084
Peak    1.000   58.332   59.332
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte

    Image

    Pre-slew 15-350 keV image (Event data; bkg subtracted)

    #   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
      300.8665 +34.9632 0.0067   16.6   10.1      22.9406    28.7  TRIG_01215690       
    ------------------------------------------
     
    Foreground time interval of the image:
    -10.000  40.160 (delta_t =  50.160 [sec])
     41.000 102.310 (delta_t =  61.310 [sec])
    103.000 494.596 (delta_t = 391.596 [sec])
    Background time interval of the image:
    

    Lightcurves

    Notes:

    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)

    Spectra

    Notes:

    Time averaged spectrum fit using the pre-slew DRM

    Power-law model
    Multiple GTIs in the spectrum
    tstart tstop
    -115.656000 -56.190000
    -10.000000 40.160000
    41.000000 102.310000
    103.000000 494.596000
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.86531     ( -0.057037   0.0574251 )
    Norm@50keV  : 2.05499E-03    ( -6.28563e-05   6.26881e-05 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.56 using 59 PHA bins.
    # Reduced chi-squared =          1.062 for     57 degrees of freedom 
    # Null hypothesis probability =   3.488118e-01
     
    Photon flux (15-150 keV)    in 562.5 sec: 0.290666 ( -0.00931818  0.00935327 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.0627e-05 ( -3.25545e-07  3.26273e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Multiple GTIs in the spectrum
    tstart tstop
    -115.656000 -56.190000
    -10.000000 40.160000
    41.000000 102.310000
    103.000000 494.596000
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.44233     ( -0.257937   0.243158 )
    Epeak [keV] : 64.3010      ( -8.88837 23.0474 )
    Norm@50keV  : 3.35495E-03    ( -0.000806833   0.0011461 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          51.42 using 59 PHA bins.
    # Reduced chi-squared =         0.9182 for     56 degrees of freedom 
    # Null hypothesis probability =   6.486681e-01
     
    Photon flux (15-150 keV)    in 562.5 sec: 0.281158 ( -0.010608  0.010655 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.02254e-05 ( -3.96e-07  3.95831e-07 ) ergs/cm2
     
    
    Band function
    Multiple GTIs in the spectrum
    tstart tstop
    -115.656000 -56.190000
    -10.000000 40.160000
    41.000000 102.310000
    103.000000 494.596000
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.09112   ( -0.452947   1.32062 )
    beta        : -2.09940    ( -0.434952   0.163561 )
    Epeak [keV] : 49.9016      ( -16.5676 18.769 )
    Norm@50keV   : 5.43765E-03    ( -0.00224182   0.040243 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          48.41 using 59 PHA bins.
    # Reduced chi-squared =         0.8801 for     55 degrees of freedom 
    # Null hypothesis probability =   7.228702e-01
     
    Photon flux (15-150 keV)    in 562.5 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.02218e-05 ( -1.02179e-05  -3.79069e-07 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 12.5989  (  )
    R^2/D10^2   : 5.43897E-02  (   )
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         254.22 using 59 PHA bins.
    # Reduced chi-squared =         4.4599 for     57 degrees of freedom 
    # Null hypothesis probability =   1.019639e-26
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.030e-06   5.794e-08
    25- 50  3.427e-06   1.212e-07
    50-150  3.375e-06   2.090e-07
    15-150  7.831e-06   2.559e-07
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 96.1334       (-10.1474      12.2142)
    Norm        : 1.26487       (-0.0598978     0.0640538)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.859e-06   1.257e-07
    25- 50  3.189e-06   1.342e-07
    50-150  5.052e-06   1.217e-06
    15-150  1.010e-05   1.252e-06
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.17716        (-0.844731      0.881252)
    R1^2/D10^2  : 0.308264        (-0.0959032      0.163919)
    kT2 [keV]   : 23.4203        (-3.1034      4.64602)
    R2^2/D10^2  : 3.76977E-03    (-0.00188573   0.00296331)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.680e-06   1.783e-07
    25- 50  3.259e-06   2.298e-07
    50-150  5.071e-06   6.415e-07
    15-150  1.001e-05   9.478e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from   58.332 sec. to   59.332 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.23476     ( -0.472444   0.598949 )
    Norm@50keV  : 4.45272E-03    ( -0.00170103   0.00153307 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.86 using 59 PHA bins.
    # Reduced chi-squared =          1.085 for     57 degrees of freedom 
    # Null hypothesis probability =   3.067974e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.750893 ( -0.158476  0.158359 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.20768e-08 ( -1.22985e-08  1.29547e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   58.332 sec. to   59.332 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.89639     (     )
    Epeak [keV] : 20.7092      (   )
    Norm@50keV  : 6.27762E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.89 using 59 PHA bins.
    # Reduced chi-squared =          1.123 for     56 degrees of freedom 
    # Null hypothesis probability =   2.455003e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.750540 ( -0.158363  0.15757 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.16631e-08 ( -1.18324e-08  1.33643e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   58.332 sec. to   59.332 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -9.99474   ( 9.99474   9.99474 )
    beta        : -2.23492    ( -0.598923   0.472959 )
    Epeak [keV] : 10.3420      ( -10.342 -10.342 )
    Norm@50keV   : 0.605130    ( -0.23119   0.20837 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.86 using 59 PHA bins.
    # Reduced chi-squared =          1.125 for     55 degrees of freedom 
    # Null hypothesis probability =   2.445550e-01
     
    Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.72867e-08 ( 0  0 ) ergs/cm2
     
    
    Single BB
     XSPEC: quit
     
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 6.59329  (-2.52222  4.96249)
    R^2/D10^2   : 1.63211  (-1.42846   17.6708)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.110e-08   6.595e-09
    25- 50  1.219e-08   7.430e-09
    50-150  1.339e-09   1.147e-09
    15-150  2.463e-08   1.438e-08
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 49.8337       (-27.4813      93.5258)
    Norm        : 4.18107       (-1.46228     3.32299)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.022e-08   3.395e-09
    25- 50  1.465e-08   5.611e-09
    50-150  1.418e-08   9.514e-09
    15-150  3.905e-08   1.486e-08
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 3.26345        (-1.19229      1.9361)
    R1^2/D10^2  : 34.0520        (-29.9267      535.052)
    kT2 [keV]   : 18.1089        (-6.90869      148.091)
    R2^2/D10^2  : 2.68356E-02    (-0.0265207   0.0890445)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.230e-08   7.330e-09
    25- 50  1.021e-08   5.800e-09
    50-150  1.948e-08   1.307e-08
    15-150  4.199e-08   2.283e-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: 1.84386     ( -0.0590947   0.0595006 )
    Norm@50keV  : 2.04681E-03    ( -6.47794e-05   6.45962e-05 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          69.79 using 59 PHA bins.
    # Reduced chi-squared =          1.224 for     57 degrees of freedom 
    # Null hypothesis probability =   1.190340e-01
     
    Photon flux (15-150 keV)    in 503.1 sec: 0.286986 ( -0.00947297  0.00950791 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.46925e-06 ( -3.01854e-07  3.026e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.53256     ( -0.2564   0.241687 )
    Epeak [keV] : 73.3719      ( -14.0457 78.2844 )
    Norm@50keV  : 2.93688E-03    ( -0.000701761   0.00099529 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.90 using 59 PHA bins.
    # Reduced chi-squared =          1.159 for     56 degrees of freedom 
    # Null hypothesis probability =   1.942185e-01
     
    Photon flux (15-150 keV)    in 503.1 sec: 0.280137 ( -0.010714  0.010777 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.20351e-06 ( -3.65502e-07  3.64848e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.943464   ( -0.642831   2.96707 )
    beta        : -1.98685    ( -0.267247   0.120849 )
    Epeak [keV] : 44.4165      ( -16.9369 32.4238 )
    Norm@50keV   : 6.88626E-03    ( -0.00450089   1.21023 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.56 using 59 PHA bins.
    # Reduced chi-squared =          1.119 for     55 degrees of freedom 
    # Null hypothesis probability =   2.530817e-01
     
    Photon flux (15-150 keV)    in 503.1 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 9.18656e-06 ( -9.18303e-06  -3.43869e-07 ) ergs/cm2
     
    

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

    S(25-50 keV)  = 3.06e-06
    S(50-100 keV) = 3.36e-06
    

    T90 vs. Hardness ratio plot

    T90                                   = 486.77999997139 sec.
    Hardness ratio (energy fluence ratio) = 1.09804
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.21426
    Count Ratio (50-100 keV) / (15-25 keV) = 0.671761
    

    Mask shadow pattern

    IMX = 2.927393813162477E-01, IMY = -5.228971463046996E-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:
     
    

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

    Time interval of the image:
    -10.000000 40.160000
    41.000000 102.310000
    103.000000 494.596000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    288.9361  10.8373   20.0  37.4  -29.2   0.7147   0.6   10.4	GRS 1915+105                  
    299.6042  35.3525  152.9  17.6   11.6   0.0613   0.1    9.1	Cyg X-1                       
    308.3247  40.8774    6.1  12.1   39.2   1.4193   1.9   10.7	Cyg X-3                       
    326.3663  38.4507   20.0   6.1  135.4   0.4832   0.6   12.0	Cyg X-2                       
      7.6270  66.7118    3.3  42.2  117.0  14.9312   3.5 ------	UNKNOWN                       
    300.8665  34.9632    0.4  16.6   10.1  22.9394  28.5 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    -60.000000 -56.190000
    -10.000000 40.160000
    41.000000 48.660000
    52.000000 54.230000
    55.000000 57.520000
    59.000000 59.360000
    61.000000 61.230000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    288.6753  11.0243    9.0  37.5  -28.7   0.2413   1.3    8.6	GRS 1915+105                  
    299.5573  35.3426    8.5  17.6   11.6   0.1884   1.4    8.6	Cyg X-1                       
    308.3339  40.8324    0.0  12.0   39.0   0.2779   2.2   12.4	Cyg X-3                       
    326.3668  38.4669    0.0   6.1  135.3   0.0603   0.5   12.7	Cyg X-2                       
     21.8480  52.5805    2.6  46.3  138.9   1.9975   4.4 ------	UNKNOWN                       
    354.9688  63.4942    2.3  36.0  116.7   1.4484   5.1 ------	UNKNOWN                       
    316.2143  60.8816    2.6  26.9   86.5   0.8899   4.5 ------	UNKNOWN                       
    300.8511  35.1191    0.5  16.6   10.7   3.2176  23.8 ------	UNKNOWN                       
    308.4621  25.9898    2.1  13.6  -32.1   0.6641   5.5 ------	UNKNOWN                       
     22.3213  14.2936    2.5  58.4 -174.5   3.2413   4.5 ------	UNKNOWN                       
    278.4593   7.2739    2.4  47.5  -22.9   1.3403   4.9 ------	UNKNOWN                       
    278.7253   5.7270    2.8  48.3  -24.7   1.2329   4.2 ------	UNKNOWN                       
    
    Plot creation:
    Sat Feb 17 18:58:22 EST 2024