batgrbproduct analysis for trigger=735188

batgrbproduct Analysis for Trigger=735188

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Feb 13 09:56:38 EST 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger735188
======================================================================

  Trigger: 00735188      Segment: 000

  BAT Trigger Time: 507123060.8   [s; MET]
      Trigger Stop: 507123061.824   [s; MET]
               UTC: 2017-01-26T11:30:42.281540    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 263.579092607182   Dec: -64.7575950508616  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.35
     Image Trigger?:     NO
     Rate S/N Ratio:     36.5239647354993  [ if not an image trigger ]
     Image S/N Ratio:    7.35

  Flight Position:   [ source = BAT ]
    RA: 263.579092607182   Dec: -64.7575950508616  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 263.625723191034   Dec: -64.7521175159684  [deg; J2000]  
        { 17h 34m 30.2s , -64d 45' 07.6" }
         +/- 1.5006274137695 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.52533284016185 [arcmin] (formal 1-sigma fit error)
    SNR: 17.0333466814202
 
  Angular difference between Flight and Ground position is 1.237687 arcmin
 
  Partial Coding Fraction: 0.04003906    [ including projection effects ]

  Duration
     T90: 9.53600001335144 +/- 1.58068339013808
        Measured from: -0.184000015258789
                   to: 9.35199999809265     [s; relative to TRIGTIME]
     T50: 3.90400004386902 +/- 0.891416807562371
        Measured from: 0.839999973773956
                   to: 4.74400001764297     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.307999968528748     
                   to: 1.30799996852875     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.759999990463257     
                   to: 10.8880000114441     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.998029   1.763836   1.415471   0.492345
           0.115028   0.128976   0.114861   0.089007 [error]
 Peak      0.228442   0.369190   0.272743   0.123119
           0.038393   0.047467   0.045749   0.033915 [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 3.69e-07 7.06e-07 1.05e-06 3.33e-06 2.95e-06 5.45e-06   erg/cm2
              Error 5.27e-08 6.29e-08 1.06e-07 7.11e-07 2.63e-07 7.90e-07   erg/cm2
Peak flux Power-law 2.34e+00 2.23e+00 1.48e+00 1.53e+00 6.68e+00 7.59e+00   ph/cm2/s
              Error 5.71e-01 3.69e-01 3.02e-01 5.89e-01 1.08e+00 1.23e+00   ph/cm2/s
 
Fluence   Cutoff-PL 3.48e-07 7.35e-07 1.08e-06 2.02e-06 2.90e-06 4.18e-06   erg/cm2
              Error 6.02e-08 7.68e-08 1.19e-07 1.28e-06 2.79e-07 1.31e-06   erg/cm2
Peak flux Cutoff-PL 2.22e+00 2.38e+00 1.56e+00 9.33e-01 6.69e+00 7.10e+00   ph/cm2/s
              Error 6.26e-01 4.80e-01 3.53e-01 7.40e-01 1.08e+00 1.37e+00   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    1.433    0.135    -      -           2.64e-02 2.18e-03   56.710 57
CPL   1.083    0.498     134.3  -39.6      3.96e-02 2.51e-02   55.310 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.592    0.246    -      -           5.22e-02 8.71e-03   65.640 57
CPL   1.140    0.898      92.9    0.0      9.11e-02 0.00e+00   64.930 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: 5.568000 sec.
T50 in the 50-300 keV band: 2.752000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   11.648   -0.760   10.888
T90     9.536   -0.184    9.352
T50     3.904    0.840    4.744
Peak    1.000    0.308    1.308
  • Click here for the BAT GCN circular template
  • Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte
  • Special notes of this burst

    Image

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

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
      263.6257   -64.7521   0.0113    40.9180   -90.1716         3.8373236     17.033 TRIG_00735188                 
     
    Foreground time interval of the image:
     -0.936   8.280 (delta_t =   9.216 [sec])
    Background time interval of the image:
    -239.800  -0.936 (delta_t = 238.864 [sec])
    

    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 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:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from   -0.760 sec. to   10.888 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.43319     ( -0.135425   0.135135 )
    Norm@50keV  : 2.63951E-02    ( -0.00218212   0.00217823 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.71 using 59 PHA bins.
    # Reduced chi-squared =         0.9949 for     57 degrees of freedom 
    # Null hypothesis probability =   4.859721e-01
     
    Photon flux (15-150 keV)    in 11.65 sec: 3.23955 ( -0.27614  0.27655 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.9522e-06 ( -2.62243e-07  2.63648e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.760 sec. to   10.888 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.08282     ( -0.568279   0.428223 )
    Epeak [keV] : 134.327      ( -55.0501 -134.329 )
    Norm@50keV  : 3.95967E-02    ( -0.0145934   0.0356727 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.31 using 59 PHA bins.
    # Reduced chi-squared =         0.9878 for     56 degrees of freedom 
    # Null hypothesis probability =   5.007573e-01
     
    Photon flux (15-150 keV)    in 11.65 sec: 3.20703 ( -0.28041  0.28058 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.89691e-06 ( -2.80141e-07  2.77227e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.760 sec. to   10.888 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]    : 15.2227  (-1.58786  1.8655)
    R^2/D10^2   : 0.358360  (-0.120506   0.172209)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          89.35 using 59 PHA bins.
    # Reduced chi-squared =          1.567 for     57 degrees of freedom 
    # Null hypothesis probability =   3.982188e-03
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.020e-07   3.146e-08
    25- 50  8.137e-07   9.506e-08
    50-150  1.292e-06   1.978e-07
    15-150  2.307e-06   2.272e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (-36.8366      -200)
    Norm        : 13.4729       (-1.10674     1.10674)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          57.59 using 59 PHA bins.
    # Reduced chi-squared =          1.010 for     57 degrees of freedom 
    # Null hypothesis probability =   4.533939e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.909e-07   4.305e-08
    25- 50  7.519e-07   9.792e-08
    50-150  1.649e-06   5.216e-07
    15-150  2.792e-06   6.908e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 8.98328        (-1.68753      1.89051)
    R1^2/D10^2  : 1.61265        (-0.71271      1.46626)
    kT2 [keV]   : 37.0688        (-10.5242      32.9882)
    R2^2/D10^2  : 1.25930E-02    (-0.0103549   0.0161052)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.48 using 59 PHA bins.
    # Reduced chi-squared =         0.9178 for     55 degrees of freedom 
    # Null hypothesis probability =   6.477959e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  3.223e-07   9.268e-08
    25- 50  8.079e-07   2.074e-07
    50-150  1.823e-06   8.313e-07
    15-150  2.953e-06   9.542e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.308 sec. to    1.308 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.59158     ( -0.240938   0.250498 )
    Norm@50keV  : 5.21527E-02    ( -0.00876028   0.00865927 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.64 using 59 PHA bins.
    # Reduced chi-squared =          1.152 for     57 degrees of freedom 
    # Null hypothesis probability =   2.023998e-01
     
    Photon flux (15-150 keV)    in 1 sec: 6.68473 ( -1.0822  1.08267 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.88315e-07 ( -8.65519e-08  8.69792e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.308 sec. to    1.308 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.13972     ( -1.13119   0.664531 )
    Epeak [keV] : 92.9458      (   )
    Norm@50keV  : 9.10587E-02    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.93 using 59 PHA bins.
    # Reduced chi-squared =          1.159 for     56 degrees of freedom 
    # Null hypothesis probability =   1.934833e-01
     
    Photon flux (15-150 keV)    in 1 sec: 6.68835 ( -1.08124  1.08201 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.81194e-07 ( -9.17366e-08  8.95745e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.308 sec. to    1.308 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]    : 12.1226  (-2.20776  2.92582)
    R^2/D10^2   : 1.68054  (-0.907145   1.74556)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          74.20 using 59 PHA bins.
    # Reduced chi-squared =          1.302 for     57 degrees of freedom 
    # Null hypothesis probability =   6.253114e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.228e-08   1.547e-08
    25- 50  1.665e-07   4.220e-08
    50-150  1.481e-07   5.670e-08
    15-150  3.669e-07   8.375e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 179.581       (-86.1632      -176.866)
    Norm        : 27.7118       (-4.58811     5.46108)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          64.92 using 59 PHA bins.
    # Reduced chi-squared =          1.139 for     57 degrees of freedom 
    # Null hypothesis probability =   2.202272e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.926e-08   3.934e-08
    25- 50  1.324e-07   7.275e-08
    50-150  2.849e-07   1.584e-07
    15-150  4.865e-07   2.704e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 8.65951        (-2.21766      2.68722)
    R1^2/D10^2  : 4.45431        (-2.58187      7.18345)
    kT2 [keV]   : 39.5110        (-17.2287      -39.4825)
    R2^2/D10^2  : 1.73808E-02    (-0.0165307   0.112817)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.23 using 59 PHA bins.
    # Reduced chi-squared =          1.113 for     55 degrees of freedom 
    # Null hypothesis probability =   2.624684e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.719e-08   3.607e-08
    25- 50  1.513e-07   8.090e-08
    50-150  2.691e-07   1.450e-07
    15-150  4.875e-07   2.321e-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: 1.43319     ( -0.135425   0.135135 )
    Norm@50keV  : 2.63951E-02    ( -0.00218212   0.00217823 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.71 using 59 PHA bins.
    # Reduced chi-squared =         0.9949 for     57 degrees of freedom 
    # Null hypothesis probability =   4.859721e-01
     
    Photon flux (15-150 keV)    in 11.65 sec: 3.23948 ( -0.276124  0.276538 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.95187e-06 ( -2.62636e-07  2.63627e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.08280     ( -0.568274   0.428251 )
    Epeak [keV] : 134.320      ( -55.0486 -134.329 )
    Norm@50keV  : 3.95977E-02    ( -0.0145934   0.0356727 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.31 using 59 PHA bins.
    # Reduced chi-squared =         0.9878 for     56 degrees of freedom 
    # Null hypothesis probability =   5.007573e-01
     
    Photon flux (15-150 keV)    in 11.65 sec: 3.20668 ( -0.28033  0.28052 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.89801e-06 ( -2.80229e-07  2.77421e-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)  = 7.06e-07
    S(50-100 keV) = 1.05e-06
    

    T90 vs. Hardness ratio plot

    T90                                   = 9.53600001335144 sec.
    Hardness ratio (energy fluence ratio) = 1.48725
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.76732
    Count Ratio (50-100 keV) / (15-25 keV) = 1.41827
    

    Mask shadow pattern

    IMX = -2.596258691428084E-03, IMY = 8.667724756775479E-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:
    -239.800000 -0.760000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.7050 -40.3865    0.0  32.5   45.2   0.2769   0.9   12.9	Vela X-1                      
    170.3304 -60.6462    2.2   9.1  -17.1   1.0000   5.2    1.5	Cen X-3                       
    186.6726 -62.7597    2.4  10.0  -66.6   0.8902   4.9    0.8	GX 301-2                      
    220.9138 -19.4573    3.7  45.9 -171.5   1.1381   3.2 ------	UNKNOWN                       
     74.2084 -53.3973    3.0  57.0   -6.8   3.3160   3.8 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -0.760000 10.888000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5184 -40.6975    5.5  32.5   44.5  -0.1210  -2.1    8.6	Vela X-1                      
    170.6559 -60.6946    9.7   9.1  -18.1   0.0453   1.2   10.9	Cen X-3                       
    186.9972 -62.8258   11.7  10.1  -67.3  -0.0369  -1.0    9.9	GX 301-2                      
    160.8928 -48.5131    2.1  13.2   53.7   0.2073   5.5 ------	UNKNOWN                       
    248.0837 -72.3930    2.7  33.6  -80.3   0.3969   4.2 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    71.500600 362.260000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    170.3272 -60.6300 1653.9  39.0   85.7  -0.0040  -0.0    0.5	Cen X-3                       
    186.5573 -62.5803    0.0  32.1   92.3   0.1066   0.4   11.7	GX 301-2                      
    244.9654 -15.6394    1.0  50.7 -168.7   5.4224  12.1    0.8	Sco X-1                       
    255.9901 -37.8449    0.6  27.3 -158.4   3.1115  18.5    0.2	4U 1700-377                   
    256.5577 -36.4993    2.9  28.6 -157.1   0.6929   4.0    7.5	GX 349+2                      
    263.0065 -24.7716    2.1  40.0 -146.1   1.5497   5.6    1.6	GX 1+4                        
    264.8418 -44.4043    5.9  20.4 -142.7   0.2867   1.9    5.0	4U 1735-44                    
    270.1402 -25.0661   10.4  39.9 -136.0   0.3118   1.1    7.9	GX 5-1                        
    270.4195 -25.6584    5.3  39.4 -135.6   0.6116   2.2    8.1	GRS 1758-258                  
    275.7323 -30.3291    4.3  35.3 -127.0  -0.6804  -2.7   10.2	H1820-303                     
    285.0075 -25.0750   18.9  42.0 -115.7   0.3710   0.6    9.4	HT1900.1-2455                 
    263.0636 -33.9652   21.2  30.8 -146.1   0.1025   0.5    8.7	GX 354-0                      
     63.2028 -70.5200    3.1  44.0   25.1   1.1532   3.7 ------	UNKNOWN                       
    241.9854 -31.9113    2.5  35.5 -177.9   0.9219   4.6 ------	UNKNOWN                       
    241.6987 -18.3590    3.0  48.7 -173.4   1.2465   3.9 ------	UNKNOWN                       
    259.8905 -25.0254    0.9  39.8 -150.5   3.2935  13.2 ------	UNKNOWN                       
    
    Plot creation:
    Mon Feb 13 10:38:14 EST 2017