batgrbproduct analysis for trigger=1159437

batgrbproduct Analysis for Trigger=1159437

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.48
    Process Start Time (local time): Sun Mar 12 20:53:25 EDT 2023
             Host Name: batproc1
   Current Working Dir: /local/data/bat1/prebascript/trigger1159437/GCN5_download_cron
======================================================================

  Trigger: 01159437      Segment: 000

  BAT Trigger Time: 700256344   [s; MET]
      Trigger Stop: 700256712   [s; MET]
               UTC: 2023-03-11T19:38:33.094200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 248.421711695159   Dec: -47.6423523657583  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    8.44
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    8.44

  Flight Position:   [ source = BAT ]
    RA: 248.421711695159   Dec: -47.6423523657583  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 248.377911392117   Dec: -47.653695733716  [deg; J2000]  
        { 16h 33m 30.7s , -47d 39' 13.3" }
         +/- 2.15001845359274 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.987972775336701 [arcmin] (formal 1-sigma fit error)
    SNR: 10.1906284919772
 
  Angular difference between Flight and Ground position is 1.896765 arcmin
 
  Partial Coding Fraction: 0.8515625    [ including projection effects ]

  Duration
     T90: 368 +/- 1
        Measured from: 0
                   to: 368     [s; relative to TRIGTIME]
     T50: 368 +/- 1
        Measured from: 0
                   to: 368     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 368 second)
        Measured from: 0     
                   to: 368     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 368     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.646138   2.073471   0.610634   0.206517
           0.199503   0.165451   0.135276   0.114461 [error]
 Peak      3.646138   2.073471   0.610634   0.206517
           0.199503   0.165451   0.135276   0.114461 [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 1.26e-06 8.86e-07 4.11e-07 2.66e-07 2.68e-06 2.82e-06   erg/cm2
              Error 1.41e-07 9.64e-08 1.03e-07 1.24e-07 2.54e-07 3.03e-07   erg/cm2
Peak flux Power-law 1.15e-01 4.54e-02 1.05e-02 2.95e-03 1.72e-01 1.74e-01   ph/cm2/s
              Error 1.33e-02 4.70e-03 2.55e-03 1.29e-03 1.50e-02 1.50e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.26e-06 8.84e-07 4.07e-07 2.60e-07 2.68e-06 2.81e-06   erg/cm2
              Error 1.41e-07 9.74e-08 1.24e-07 2.04e-07 2.76e-07 3.64e-07   erg/cm2
Peak flux Cutoff-PL 1.15e-01 4.52e-02 1.04e-02 2.83e-03 1.72e-01 1.74e-01   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   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    3.109    0.244    -      -           5.78e-04 1.06e-04   66.720 57
CPL   1.000    0.000      50.0    0.0      2.63e-03 0.00e+00  163.160 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.109    0.244    -      -           5.78e-04 1.06e-04   66.720 57
CPL   1.000    0.000      50.0    0.0      2.63e-03 0.00e+00  163.160 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  368.000    0.000  368.000
T90   368.000    0.000  368.000
T50   368.000    0.000  368.000
Peak  368.000    0.000  368.000
  • 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
      248.3779 -47.6537 0.0189   31.9  -12.3       6.9590    10.2  TRIG_01159437       
    ------------------------------------------
     
    Foreground time interval of the image:
      0.000 178.510 (delta_t = 178.510 [sec])
    180.000 368.000 (delta_t = 188.000 [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

    8 ms binning

    From T100_start-3 s to T100_start+3 s

    2 ms binning

    From T100_start-1 s to T100_start+1 s

    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
    0.000000 178.510000
    180.000000 368.000000
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 3.10914     ( -0.235022   0.252194 )
    Norm@50keV  : 5.78420E-04    ( -0.000104359   0.000107382 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.72 using 59 PHA bins.
    # Reduced chi-squared =          1.171 for     57 degrees of freedom 
    # Null hypothesis probability =   1.775300e-01
     
    Photon flux (15-150 keV)    in 366.5 sec: 0.172401 ( -0.0149833  0.0150312 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.68358e-06 ( -2.51905e-07  2.57043e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Multiple GTIs in the spectrum
    tstart tstop
    0.000000 178.510000
    180.000000 368.000000
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.00000     (     )
    Epeak [keV] : 50.0000      (   )
    Norm@50keV  : 2.62660E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         163.16 using 59 PHA bins.
    # Reduced chi-squared =         2.9135 for     56 degrees of freedom 
    # Null hypothesis probability =   2.075627e-12
     
    Photon flux (15-150 keV)    in 366.5 sec: 0.172409 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.67942e-06 ( -2.90711e-07  2.60886e-07 ) ergs/cm2
     
    
    Band function
    Multiple GTIs in the spectrum
    tstart tstop
    0.000000 178.510000
    180.000000 368.000000
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.46415   (     )
    beta        : -8.23982    (     )
    Epeak [keV] : 29.1037      (   )
    Norm@50keV   : 2.19364E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         120.27 using 59 PHA bins.
    # Reduced chi-squared =         2.1867 for     55 degrees of freedom 
    # Null hypothesis probability =   9.013907e-07
     
    Photon flux (15-150 keV)    in 366.5 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]    : 5.22162  (-0.491768  0.55203)
    R^2/D10^2   : 1.10246  (-0.428305   0.71174)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          86.93 using 59 PHA bins.
    # Reduced chi-squared =          1.525 for     57 degrees of freedom 
    # Null hypothesis probability =   6.502055e-03
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.165e-06   1.752e-07
    25- 50  8.456e-07   1.307e-07
    50-150  4.223e-08   1.783e-08
    15-150  2.053e-06   2.653e-07
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 16.9843       (-3.05125      4.00529)
    Norm        : 2.46858       (-0.642091     0.920185)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.205e-06   1.565e-07
    25- 50  9.217e-07   1.261e-07
    50-150  2.067e-07   7.786e-08
    15-150  2.333e-06   2.379e-07
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.40612        (-0.605079      0.600875)
    R1^2/D10^2  : 2.31832        (-1.06923      2.43058)
    kT2 [keV]   : 20.0727        (-7.35921      15.6856)
    R2^2/D10^2  : 1.64794E-03    (-0.001417   0.00879888)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.258e-06   2.505e-07
    25- 50  8.053e-07   1.961e-07
    50-150  7.111e-07   4.428e-07
    15-150  2.774e-06   7.387e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from  180.000 sec. to  368.000 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 3.10914     ( -0.235022   0.252194 )
    Norm@50keV  : 5.78420E-04    ( -0.000104359   0.000107382 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.72 using 59 PHA bins.
    # Reduced chi-squared =          1.171 for     57 degrees of freedom 
    # Null hypothesis probability =   1.775300e-01
     
    Photon flux (15-150 keV)    in 366.5 sec: 0.172401 ( -0.0149833  0.0150312 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.68358e-06 ( -2.51905e-07  2.57043e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  180.000 sec. to  368.000 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.00000     (     )
    Epeak [keV] : 50.0000      (   )
    Norm@50keV  : 2.62660E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         163.16 using 59 PHA bins.
    # Reduced chi-squared =         2.9135 for     56 degrees of freedom 
    # Null hypothesis probability =   2.075627e-12
     
    Photon flux (15-150 keV)    in 366.5 sec: 0.172409 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.67942e-06 ( -2.90711e-07  2.60886e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  180.000 sec. to  368.000 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.46415   (     )
    beta        : -8.23982    (     )
    Epeak [keV] : 29.1037      (   )
    Norm@50keV   : 2.19364E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         120.27 using 59 PHA bins.
    # Reduced chi-squared =         2.1867 for     55 degrees of freedom 
    # Null hypothesis probability =   9.013907e-07
     
    Photon flux (15-150 keV)    in 366.5 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Single BB
     XSPEC: quit
     
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 5.22162  (-0.491768  0.55203)
    R^2/D10^2   : 1.10246  (-0.428305   0.71174)
    (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  1.165e-06   1.653e-07
    25- 50  8.456e-07   1.407e-07
    50-150  4.223e-08   1.810e-08
    15-150  2.053e-06   2.320e-07
    
    Thermal bremsstrahlung (OTTB)
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 16.9843       (-3.05125      4.00529)
    Norm        : 2.46858       (-0.642091     0.920185)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.205e-06   1.360e-07
    25- 50  9.217e-07   1.220e-07
    50-150  2.067e-07   7.926e-08
    15-150  2.333e-06   2.417e-07
    
    Double BB
    XSPEC12>exit
     XSPEC: quit
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.40612        (-0.605079      0.600875)
    R1^2/D10^2  : 2.31832        (-1.06923      2.43058)
    kT2 [keV]   : 20.0727        (-7.35921      15.6856)
    R2^2/D10^2  : 1.64794E-03    (-0.001417   0.00879888)
    ------------------------------------------------------------
     Reduced chi-squared = 
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.258e-06   2.505e-07
    25- 50  8.053e-07   1.730e-07
    50-150  7.111e-07   4.119e-07
    15-150  2.774e-06   7.632e-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: 3.10914     ( -0.235022   0.252194 )
    Norm@50keV  : 5.78420E-04    ( -0.000104359   0.000107382 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          66.72 using 59 PHA bins.
    # Reduced chi-squared =          1.171 for     57 degrees of freedom 
    # Null hypothesis probability =   1.775300e-01
     
    Photon flux (15-150 keV)    in 366.5 sec: 0.172401 ( -0.0149833  0.0150312 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.68358e-06 ( -2.51905e-07  2.57043e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.00000     (     )
    Epeak [keV] : 50.0000      (   )
    Norm@50keV  : 2.62660E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         163.16 using 59 PHA bins.
    # Reduced chi-squared =         2.9135 for     56 degrees of freedom 
    # Null hypothesis probability =   2.075627e-12
     
    Photon flux (15-150 keV)    in 366.5 sec: 0.172409 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.67942e-06 ( -2.90711e-07  2.60886e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.46415   (     )
    beta        : -8.23982    (     )
    Epeak [keV] : 29.1037      (   )
    Norm@50keV   : 2.19364E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         120.27 using 59 PHA bins.
    # Reduced chi-squared =         2.1867 for     55 degrees of freedom 
    # Null hypothesis probability =   9.013907e-07
     
    Photon flux (15-150 keV)    in 366.5 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)  = 8.86e-07
    S(50-100 keV) = 4.11e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 368 sec.
    Hardness ratio (energy fluence ratio) = 0.463883
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.568676
    Count Ratio (50-100 keV) / (15-25 keV) = 0.167474
    

    Mask shadow pattern

    IMX = 6.074008469338011E-01, IMY = 1.321910423810511E-01
    

    TIME vs. PHA plot around the trigger time

    TIME vs. DetID plot around the trigger time

    100 us light curve (15-350 keV)

    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:
    0.000000 178.510000
    180.000000 368.000000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    245.0501 -15.8013    0.3   0.1  167.5  21.0258  36.4   10.5	Sco X-1                       
    254.5697  35.3294    4.9  52.0 -178.2   5.2473   2.4    5.5	Her X-1                       
    255.9471 -37.9906    4.6  24.1  -29.4   1.6815   2.5    9.0	4U 1700-377                   
    256.6087 -36.3484    5.6  22.9  -32.5  -1.3801  -2.1    9.5	GX 349+2                      
    262.8673 -24.6783    4.6  18.8  -67.4  -1.7160  -2.5    8.7	GX 1+4                        
    264.6585 -44.3134   40.8  32.9  -34.3  -0.2156  -0.3    9.0	4U 1735-44                    
    268.3175  -1.5871    8.5  27.0 -127.7  -0.9576  -1.4    8.6	SW J1753.5-0127               
    270.1216 -24.9487    0.0  25.1  -72.9  -2.2175  -2.9   11.8	GX 5-1                        
    270.3479 -25.8780   10.7  25.6  -70.9   0.8060   1.1    8.5	GRS 1758-258                  
    273.9293 -13.9015    4.9  27.9  -98.3  -2.1055  -2.4    9.2	GX 17+2                       
    275.8246 -30.2760   23.5  31.6  -65.5  -0.4442  -0.5    7.5	H1820-303                     
    284.9787 -24.9192   11.2  38.3  -77.8  -1.5452  -1.0    3.1	HT1900.1-2455                 
    263.1373 -33.9713    9.8  24.3  -46.7   0.8762   1.2   11.0	GX 354-0                      
    211.3876   5.2779    2.3  39.5  111.7   9.4587   5.1 ------	UNKNOWN                       
    245.4001  14.3629    2.6  30.3  172.6   3.0441   4.5 ------	UNKNOWN                       
    252.3726  39.2913    3.9  55.6  178.8   9.9012   3.0 ------	UNKNOWN                       
    248.3779 -47.6537    1.1  31.9  -12.3   6.9588  10.2 ------	UNKNOWN                       
    284.8184 -36.2569    2.5  40.7  -60.3   6.6171   4.5 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    661.600600 723.010800
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.6320  35.2820    6.6  37.5  109.9   0.5658   1.8    9.3	Her X-1                       
    263.1110 -24.8072    9.0  49.5   16.8   0.3767   1.3    6.7	GX 1+4                        
    268.2628  -1.5074    6.4  28.8   36.3  -0.2889  -1.8    7.1	SW J1753.5-0127               
    270.1875 -24.9993    6.1  46.2    9.4   0.4546   1.9    7.1	GX 5-1                        
    270.3284 -25.7136    5.2  46.7    8.7  -0.5591  -2.2    2.3	GRS 1758-258                  
    274.0630 -13.9238    5.4  34.7   12.7  -0.3693  -2.1    7.5	GX 17+2                       
    275.8020 -30.3728    6.3  49.1    0.3  -0.4453  -1.8    6.4	H1820-303                     
    285.1693 -24.9204    3.7  41.8   -9.2   0.5777   3.1    7.3	HT1900.1-2455                 
    288.6603  10.8904    5.7   6.0    6.3   0.2661   2.1    8.8	GRS 1915+105                  
    299.6855  35.0103    0.0  20.1 -176.5   0.6390   4.9   12.4	Cyg X-1                       
    308.2126  40.8024   10.5  28.5 -169.5  -0.1598  -1.1   10.1	Cyg X-3                       
    326.2476  38.1732    7.7  37.7 -149.5   0.3082   1.5    9.6	Cyg X-2                       
    277.8696  29.6503    2.9  17.9  122.5   0.5668   4.0 ------	UNKNOWN                       
    299.0374  -5.3479    2.6  23.1  -37.7   0.6513   4.5 ------	UNKNOWN                       
    
    Plot creation:
    Sun Mar 12 20:56:33 EDT 2023