batgrbproduct analysis for trigger=895479

batgrbproduct Analysis for Trigger=895479

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Thu Mar 28 17:19:37 EDT 2019
             Host Name: bat1
   Current Working Dir: /local/data/bat1/prebascript/trigger895479/GCN5_download_cron
======================================================================

  Trigger: 00895479      Segment: 000

  BAT Trigger Time: 575414888   [s; MET]
      Trigger Stop: 575415016   [s; MET]
               UTC: 2019-03-27T21:27:45.358300    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 314.705126854701   Dec: 41.7447121729859  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    9.88
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    9.88

  Flight Position:   [ source = BAT ]
    RA: 314.705126854701   Dec: 41.7447121729859  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 314.67877151912   Dec: 41.7554874776749  [deg; J2000]  
        { 20h 58m 42.9s , +41d 45' 19.8" }
         +/- 2.78937991182624 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.22104788915341 [arcmin] (formal 1-sigma fit error)
    SNR: 7.02552612267855
 
  Angular difference between Flight and Ground position is 1.345290 arcmin
 
  Partial Coding Fraction: 1.015625    [ including projection effects ]

  Duration
     T90: 128 +/- 
        Measured from: 0
                   to: 128     [s; relative to TRIGTIME]
     T50: 128 +/- 
        Measured from: 0
                   to: 128     [s; relative to TRIGTIME]

    WARNING: battblocks failed.  Used TDRSS fore/background intervals

  Fluence
     Peak Flux  (peak 128 second)
        Measured from: 0     
                   to: 128     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 0     
                   to: 128     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.621595   0.523873   0.015372  -0.115718
           0.076543   0.077557   0.064996   0.053925 [error]
 Peak      0.621595   0.523873   0.015372  -0.115718
           0.076543   0.077557   0.064996   0.053925 [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 1.81e-07 1.65e-07 1.04e-07 1.01e-07 4.93e-07 5.52e-07   erg/cm2
              Error 3.39e-08 3.54e-08 4.32e-08 7.56e-08 1.10e-07 1.52e-07   erg/cm2
Peak flux Power-law 4.67e-02 2.39e-02 7.53e-03 3.04e-03 7.98e-02 8.11e-02   ph/cm2/s
              Error 8.90e-03 4.92e-03 3.02e-03 2.14e-03 1.37e-02 1.41e-02   ph/cm2/s
 
Fluence   Cutoff-PL 1.75e-07 2.17e-07 3.15e-08 1.45e-10 4.24e-07 4.24e-07   erg/cm2
              Error 3.82e-08 5.13e-08 4.32e-08 3.70e-09 8.42e-08 8.43e-08   erg/cm2
Peak flux Cutoff-PL 4.37e-02 3.20e-02 2.62e-03 6.54e-06 7.83e-02 7.83e-02   ph/cm2/s
              Error 1.00e-02 7.17e-03 3.34e-03 1.54e-04 1.31e-02 1.31e-02   ph/cm2/s
 
Fluence        Band 1.74e-07 2.16e-07 3.72e-08 4.06e-10 4.29e-07 4.29e-07   erg/cm2
              Error 3.77e-08 -------- -------- 2.60e-08 -------- --------   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    2.662    0.366    -      -           3.67e-04 1.15e-04   64.530 57
CPL  -1.084    3.365      25.6    6.1      1.32e-01 1.31e+02   54.390 56
 
The chi2 of BB fit is 54.30 which shows a significant improvement in the fit over a PL.
Check the BB fit.
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.662    0.366    -      -           3.67e-04 1.15e-04   64.530 57
CPL  -1.084    3.365      25.6    6.1      1.32e-01 1.31e+02   54.390 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  128.000    0.000  128.000
T90   128.000    0.000  128.000
T50   128.000    0.000  128.000
Peak  128.000    0.000  128.000
  • 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
      314.6788 +41.7555 0.0273   13.5 -144.0       1.0528     7.0  TRIG_00895479       
    ------------------------------------------
     
    Foreground time interval of the image:
      0.000 128.000 (delta_t = 128.000 [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
    Time interval is from    0.000 sec. to  128.000 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.66244     ( -0.338381   0.393549 )
    Norm@50keV  : 3.66660E-04    ( -0.000112549   0.000116805 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.53 using 59 PHA bins.
    # Reduced chi-squared =          1.132 for     57 degrees of freedom 
    # Null hypothesis probability =   2.303088e-01
     
    Photon flux (15-150 keV)    in 128 sec: 7.98250E-02 ( -0.0136744  0.0137194 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.92536e-07 ( -1.0583e-07  1.13405e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.000 sec. to  128.000 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -1.08408     ( -4.57999   2.15032 )
    Epeak [keV] : 25.6027      ( -7.51264 4.62574 )
    Norm@50keV  : 0.131708    ( -0.149098   262.735 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.39 using 59 PHA bins.
    # Reduced chi-squared =         0.9713 for     56 degrees of freedom 
    # Null hypothesis probability =   5.359656e-01
     
    Photon flux (15-150 keV)    in 128 sec: 7.83300E-02 ( -0.013055  0.013131 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.23908e-07 ( -7.98144e-08  8.86682e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.000 sec. to  128.000 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 1.19140   ( -2.20915   -1.16096 )
    beta        : -10.0000    ( 10   10 )
    Epeak [keV] : 25.6970      ( -6.33846 4.55821 )
    Norm@50keV   : 0.156752    ( -0.156741   34.2905 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.36 using 59 PHA bins.
    # Reduced chi-squared =         0.9884 for     55 degrees of freedom 
    # Null hypothesis probability =   4.988962e-01
     
    Photon flux (15-150 keV)    in 128 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.29033e-07 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 6.67780  (-0.959738  1.09207)
    R^2/D10^2   : 0.200425  (-0.0945525   0.184042)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.30 using 59 PHA bins.
    # Reduced chi-squared =         0.9526 for     57 degrees of freedom 
    # Null hypothesis probability =   5.770649e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.746e-07   4.900e-08
    25- 50  2.178e-07   6.771e-08
    50-150  3.034e-08   1.808e-08
    15-150  4.227e-07   1.149e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 25.1724       (-7.1266      10.7637)
    Norm        : 0.781120       (-0.227642     0.345147)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.97 using 59 PHA bins.
    # Reduced chi-squared =          1.017 for     57 degrees of freedom 
    # Null hypothesis probability =   4.392653e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.839e-07   4.673e-08
    25- 50  1.894e-07   5.538e-08
    50-150  8.133e-08   5.268e-08
    15-150  4.546e-07   1.196e-07
    
    Double BB
    # Reduced chi-squared =         0.9513 for     55 degrees of freedom 
    # Reduced chi-squared =         0.9503 for     55 degrees of freedom 
    # Reduced chi-squared =         0.9497 for     55 degrees of freedom 
    # Reduced chi-squared =         0.9496 for     55 degrees of freedom 
    # Null hypothesis probability =   5.010320e-01
    # Null hypothesis probability =   5.022123e-01
    # Null hypothesis probability =   5.557276e-01
    # Null hypothesis probability =   5.666485e-01
    # Null hypothesis probability =   5.737408e-01
    # Null hypothesis probability =   5.776997e-01
    # Null hypothesis probability =   5.798020e-01
    # Null hypothesis probability =   5.809100e-01
    # Null hypothesis probability =   5.813070e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.752e-07   1.062e-04
    25- 50  2.166e-07   7.392e-04
    50-150  3.320e-08   1.244e-02
    15-150  4.250e-07   1.236e-02
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.000 sec. to  128.000 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.66244     ( -0.338381   0.393549 )
    Norm@50keV  : 3.66660E-04    ( -0.000112549   0.000116805 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.53 using 59 PHA bins.
    # Reduced chi-squared =          1.132 for     57 degrees of freedom 
    # Null hypothesis probability =   2.303088e-01
     
    Photon flux (15-150 keV)    in 128 sec: 7.98250E-02 ( -0.0136744  0.0137194 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.92536e-07 ( -1.0583e-07  1.13405e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.000 sec. to  128.000 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -1.08408     ( -4.57999   2.15032 )
    Epeak [keV] : 25.6027      ( -7.51264 4.62574 )
    Norm@50keV  : 0.131708    ( -0.149098   262.735 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.39 using 59 PHA bins.
    # Reduced chi-squared =         0.9713 for     56 degrees of freedom 
    # Null hypothesis probability =   5.359656e-01
     
    Photon flux (15-150 keV)    in 128 sec: 7.83300E-02 ( -0.013055  0.013131 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.23908e-07 ( -7.98144e-08  8.86682e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.000 sec. to  128.000 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 1.19140   ( -2.20915   -1.16096 )
    beta        : -10.0000    ( 10   10 )
    Epeak [keV] : 25.6970      ( -6.33851 4.55821 )
    Norm@50keV   : 0.156752    ( -0.156741   34.2871 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.36 using 59 PHA bins.
    # Reduced chi-squared =         0.9884 for     55 degrees of freedom 
    # Null hypothesis probability =   4.988962e-01
     
    Photon flux (15-150 keV)    in 128 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.29033e-07 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 6.67780  (-0.959738  1.09207)
    R^2/D10^2   : 0.200425  (-0.0945525   0.184042)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.30 using 59 PHA bins.
    # Reduced chi-squared =         0.9526 for     57 degrees of freedom 
    # Null hypothesis probability =   5.770649e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.746e-07   4.783e-08
    25- 50  2.178e-07   6.833e-08
    50-150  3.034e-08   1.702e-08
    15-150  4.227e-07   1.172e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 25.1724       (-7.1266      10.7637)
    Norm        : 0.781120       (-0.227642     0.345147)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.97 using 59 PHA bins.
    # Reduced chi-squared =          1.017 for     57 degrees of freedom 
    # Null hypothesis probability =   4.392653e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.839e-07   4.580e-08
    25- 50  1.894e-07   6.346e-08
    50-150  8.133e-08   5.590e-08
    15-150  4.546e-07   1.306e-07
    
    Double BB
    # Reduced chi-squared =         0.9513 for     55 degrees of freedom 
    # Reduced chi-squared =         0.9503 for     55 degrees of freedom 
    # Reduced chi-squared =         0.9497 for     55 degrees of freedom 
    # Reduced chi-squared =         0.9496 for     55 degrees of freedom 
    # Null hypothesis probability =   5.010320e-01
    # Null hypothesis probability =   5.022123e-01
    # Null hypothesis probability =   5.557276e-01
    # Null hypothesis probability =   5.666485e-01
    # Null hypothesis probability =   5.737408e-01
    # Null hypothesis probability =   5.776997e-01
    # Null hypothesis probability =   5.798020e-01
    # Null hypothesis probability =   5.809100e-01
    # Null hypothesis probability =   5.813070e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.752e-07   1.251e-04
    25- 50  2.166e-07   7.827e-04
    50-150  3.320e-08   1.267e-02
    15-150  4.250e-07   1.260e-02
    

    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: 2.66244     ( -0.338381   0.393549 )
    Norm@50keV  : 3.66660E-04    ( -0.000112549   0.000116805 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.53 using 59 PHA bins.
    # Reduced chi-squared =          1.132 for     57 degrees of freedom 
    # Null hypothesis probability =   2.303088e-01
     
    Photon flux (15-150 keV)    in 128 sec: 7.98250E-02 ( -0.0136744  0.0137194 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.92536e-07 ( -1.0583e-07  1.13405e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -1.08408     ( -4.57999   2.15032 )
    Epeak [keV] : 25.6027      ( -7.51264 4.62574 )
    Norm@50keV  : 0.131708    ( -0.149098   262.735 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.39 using 59 PHA bins.
    # Reduced chi-squared =         0.9713 for     56 degrees of freedom 
    # Null hypothesis probability =   5.359656e-01
     
    Photon flux (15-150 keV)    in 128 sec: 7.83300E-02 ( -0.013055  0.013131 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.23908e-07 ( -7.98144e-08  8.86682e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 1.19140   ( -2.20915   -1.16096 )
    beta        : -10.0000    ( 10   10 )
    Epeak [keV] : 25.6970      ( -6.33848 4.55821 )
    Norm@50keV   : 0.156752    ( -0.156741   36.2732 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.36 using 59 PHA bins.
    # Reduced chi-squared =         0.9884 for     55 degrees of freedom 
    # Null hypothesis probability =   4.988962e-01
     
    Photon flux (15-150 keV)    in 128 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.29033e-07 ( 0  0 ) ergs/cm2
     
    

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

    S(25-50 keV)  = 1.65e-07
    S(50-100 keV) = 1.04e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 128 sec.
    Hardness ratio (energy fluence ratio) = 0.630303
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.842788
    Count Ratio (50-100 keV) / (15-25 keV) = 0.0247299
    

    Mask shadow pattern

    IMX = -1.943132318852840E-01, IMY = 1.409179795112322E-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 128.000000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.5398  35.3418    3.5  39.9  103.2  -2.2279  -3.3    4.0	Her X-1                       
    268.3098  -1.5052   36.0  46.9   45.8  -0.2475  -0.3    4.7	SW J1753.5-0127               
    288.8683  10.9453    2.8  24.8   29.3   0.7932   4.1    4.1	GRS 1915+105                  
    299.5834  35.2047    0.5   4.1  134.7   3.6284  23.1    0.4	Cyg X-1                       
    308.1455  41.0540    4.2   9.9 -161.1  -0.4690  -2.8    6.3	Cyg X-3                       
    326.2643  38.4398   36.5  20.1 -120.0   0.0558   0.3    8.3	Cyg X-2                       
    270.9339  43.8608    2.6  27.5  119.4   1.1324   4.5 ------	UNKNOWN                       
    314.6788  41.7555    1.6  13.5 -144.0   1.0528   7.0 ------	UNKNOWN                       
    347.9984  74.8669    2.5  48.0 -170.7   1.4619   4.6 ------	UNKNOWN                       
    312.0318  -2.7398    2.7  35.9  -20.9   0.8477   4.3 ------	UNKNOWN                       
    343.1906  21.7090    2.7  37.2  -89.1   1.9916   4.3 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    176.200600 465.110000
    466.000000 656.320000
    657.000000 963.026000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    288.7400  10.9430    3.3  38.3   18.5   3.3985   3.5    3.4	GRS 1915+105                  
    299.5844  35.2048    0.3  13.5   40.5  23.3482  39.6    0.3	Cyg X-1                       
    308.2548  41.0707    7.9   4.9   58.7   0.8910   1.4    9.6	Cyg X-3                       
    326.1873  38.3618    5.2   9.4  -98.2   1.3348   2.2    2.5	Cyg X-2                       
    295.0351  24.2910    2.6  23.9   23.7   2.7431   4.4 ------	UNKNOWN                       
    347.7553  67.5582    3.0  31.3  178.2   2.8827   3.9 ------	UNKNOWN                       
    314.6995  41.7700    1.2   0.0 -166.9   5.9976   9.5 ------	UNKNOWN                       
    310.7369  27.1964    3.4  14.9  -11.7   1.9829   3.4 ------	UNKNOWN                       
     49.9728  62.3876    2.7  56.1 -171.6  10.8599   4.3 ------	UNKNOWN                       
     43.0288  51.6812    4.3  57.6 -158.2  12.8163   2.7 ------	UNKNOWN                       
    
    Plot creation:
    Thu Mar 28 17:23:04 EDT 2019