batgrbproduct Analysis for Trigger=517234

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Jan 13 06:04:32 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger517234
======================================================================

  Trigger: 00517234      Segment: 000

  BAT Trigger Time: 352880026.624   [s; MET]
      Trigger Stop: 352880030.72   [s; MET]
               UTC: 2012-03-08T06:13:38.654560    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 219.077930337103   Dec: 79.7034623843718  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.74
     Image Trigger?:     NO
     Rate S/N Ratio:     8.30662386291807  [ if not an image trigger ]
     Image S/N Ratio:    8.74

  Flight Position:   [ source = BAT ]
    RA: 219.077930337103   Dec: 79.7034623843718  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 219.12266054142   Dec: 79.677734855378  [deg; J2000]  
        { 14h 36m 29.4s , +79d 40' 39.8" }
         +/- 1.31455536765174 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.425188706623284 [arcmin] (formal 1-sigma fit error)
    SNR: 20.5794735924838
 
  Angular difference between Flight and Ground position is 1.616649 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 61.2559999227524 +/- 16.8148358036733
        Measured from: -19.4639999866486
                   to: 41.7919999361038     [s; relative to TRIGTIME]
     T50: 23.1159999966621 +/- 3.68487558487293
        Measured from: -6.28400003910065
                   to: 16.8319999575615     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.624000012874603     
                   to: 1.6240000128746     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -24.7520000338554     
                   to: 58.2039999961853     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.667613   0.803141   0.502276   0.097781
           0.045030   0.047349   0.043354   0.041502 [error]
 Peak      0.023313   0.030163   0.019870   0.001468
           0.005007   0.005475   0.005001   0.004647 [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 1.98e-07 3.19e-07 3.88e-07 9.25e-07 1.17e-06 1.83e-06   erg/cm2
              Error 2.15e-08 2.22e-08 4.22e-08 2.07e-07 9.80e-08 2.46e-07   erg/cm2
Peak flux Power-law 2.25e-01 2.00e-01 1.23e-01 1.14e-01 5.96e-01 6.62e-01   ph/cm2/s
              Error 6.94e-02 4.22e-02 4.10e-02 7.47e-02 1.26e-01 1.48e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.84e-07 3.42e-07 3.86e-07 3.45e-07 1.09e-06 1.26e-06   erg/cm2
              Error 2.46e-08 2.90e-08 4.67e-08 2.92e-07 1.13e-07 3.15e-07   erg/cm2
Peak flux Cutoff-PL 2.17e-01 2.10e-01 1.23e-01 6.60e-02 5.88e-01 6.16e-01   ph/cm2/s
              Error 7.62e-02 5.55e-02 4.56e-02 9.95e-02 1.29e-01 1.69e-01   ph/cm2/s
 
Fluence        Band 1.83e-07 3.39e-07 3.87e-07 3.71e-07 1.10e-06 1.27e-06   erg/cm2
              Error 2.17e-08 -------- 4.30e-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    1.719    0.129    -      -           1.52e-03 1.21e-04   53.070 57
CPL   1.095    0.544      65.0   47.4      3.34e-03 2.55e-03   48.520 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.707    0.391    -      -           4.48e-03 1.14e-03   68.960 57
CPL   1.333    1.535      76.2   -0.0      7.34e-03 5.49e-02   68.790 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: 44.800000 sec.
T50 in the 50-300 keV band: 22.016000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   82.956  -24.752   58.204
T90    61.256  -19.464   41.792
T50    23.116   -6.284   16.832
Peak    1.000    0.624    1.624
  • Click here for the BAT GCN circular template
  • 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
      219.1227    79.6777   0.0093    19.8523   -28.6161         1.8948941     20.579 TRIG_00517234                 
     
    Foreground time interval of the image:
    -24.752  35.877 (delta_t =  60.629 [sec])
    Background time interval of the image:
    -239.624 -24.752 (delta_t = 214.872 [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 4.096000
    

    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 4.096000
    

    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 4.096000
    

    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)

    The mask-weighted light curves based on cleaned DPHs

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from  -24.752 sec. to   58.204 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.71877     ( -0.127256   0.13013 )
    Norm@50keV  : 1.52465E-03    ( -0.000121361   0.000119971 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.07 using 59 PHA bins.
    # Reduced chi-squared =         0.9310 for     57 degrees of freedom 
    # Null hypothesis probability =   6.233013e-01
     
    Photon flux (15-150 keV)    in 82.96 sec: 0.203837 ( -0.0142432  0.0142487 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.16946e-06 ( -9.73071e-08  9.87249e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -24.752 sec. to   58.204 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.09529     ( -0.581074   0.507259 )
    Epeak [keV] : 65.0351      ( -14.1434 80.5722 )
    Norm@50keV  : 3.33996E-03    ( -0.00154589   0.00354593 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          48.52 using 59 PHA bins.
    # Reduced chi-squared =         0.8664 for     56 degrees of freedom 
    # Null hypothesis probability =   7.510014e-01
     
    Photon flux (15-150 keV)    in 82.96 sec: 0.197599 ( -0.01505  0.015052 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.09457e-06 ( -1.11357e-07  1.14427e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  -24.752 sec. to   58.204 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.09523   ( -0.464374   0.634162 )
    beta        : -10.0000    ( 10   3.55271e-14 )
    Epeak [keV] : 65.0213      ( -13.6417 80.5793 )
    Norm@50keV   : 3.33993E-03    ( -0.00154639   0.00354742 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          48.52 using 59 PHA bins.
    # Reduced chi-squared =         0.8821 for     55 degrees of freedom 
    # Null hypothesis probability =   7.190834e-01
     
    Photon flux (15-150 keV)    in 82.96 sec: 0.198235 ( 6.80176  -0.015286 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.0972e-06 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 11.9548  (-1.02471  1.13519)
    R^2/D10^2   : 4.95792E-02  (-0.0140073   0.019292)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          82.89 using 59 PHA bins.
    # Reduced chi-squared =          1.454 for     57 degrees of freedom 
    # Null hypothesis probability =   1.417061e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.243e-07   1.551e-08
    25- 50  3.894e-07   3.186e-08
    50-150  3.338e-07   5.828e-08
    15-150  8.475e-07   7.935e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 120.524       (-32.5286      47.7561)
    Norm        : 0.858611       (-0.0732317     0.0936415)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          48.97 using 59 PHA bins.
    # Reduced chi-squared =         0.8591 for     57 degrees of freedom 
    # Null hypothesis probability =   7.665174e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.855e-07   1.896e-08
    25- 50  3.321e-07   3.480e-08
    50-150  5.940e-07   2.053e-07
    15-150  1.112e-06   2.489e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 6.40582        (-1.52996      1.62001)
    R1^2/D10^2  : 0.302923        (-0.155922      0.458649)
    kT2 [keV]   : 20.9995        (-4.32199      7.45915)
    R2^2/D10^2  : 4.71633E-03    (-0.00325737   0.00535439)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.89 using 59 PHA bins.
    # Reduced chi-squared =         0.8707 for     55 degrees of freedom 
    # Null hypothesis probability =   7.406462e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.822e-07   6.262e-08
    25- 50  3.391e-07   9.374e-08
    50-150  5.711e-07   2.500e-07
    15-150  1.092e-06   3.535e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.624 sec. to    1.624 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.70676     ( -0.373793   0.40814 )
    Norm@50keV  : 4.47972E-03    ( -0.00116422   0.00111349 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.96 using 59 PHA bins.
    # Reduced chi-squared =          1.210 for     57 degrees of freedom 
    # Null hypothesis probability =   1.331063e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.596369 ( -0.125691  0.125697 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.14543e-08 ( -1.08931e-08  1.14383e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.624 sec. to    1.624 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.33325     ( -1.9968   1.07333 )
    Epeak [keV] : 76.1953      ( -76.3095 -76.3603 )
    Norm@50keV  : 7.34448E-03    ( -0.00732896   0.10251 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.79 using 59 PHA bins.
    # Reduced chi-squared =          1.228 for     56 degrees of freedom 
    # Null hypothesis probability =   1.172486e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.588398 ( -0.129528  0.129269 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.96455e-08 ( -1.23932e-08  1.28715e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.624 sec. to    1.624 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 0.343944   ( -1.80565   -1.80565 )
    beta        : -1.92370    ( 1.97715   0.612944 )
    Epeak [keV] : 33.9180      ( -30.6972 122.971 )
    Norm@50keV   : 0.114981    ( -0.116014   663.704 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.44 using 59 PHA bins.
    # Reduced chi-squared =          1.244 for     55 degrees of freedom 
    # Null hypothesis probability =   1.052136e-01
     
    Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.98196e-08 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 11.1064  (-2.80628  3.77993)
    R^2/D10^2   : 0.192932  (-0.125165   0.360055)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          73.53 using 59 PHA bins.
    # Reduced chi-squared =          1.290 for     57 degrees of freedom 
    # Null hypothesis probability =   6.928645e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.982e-09   2.133e-09
    25- 50  1.426e-08   6.058e-09
    50-150  1.001e-08   5.539e-09
    15-150  2.925e-08   1.048e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 98.5980       (-48.8101      -99.2774)
    Norm        : 2.65482       (-0.686269     0.835451)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.85 using 59 PHA bins.
    # Reduced chi-squared =          1.208 for     57 degrees of freedom 
    # Null hypothesis probability =   1.350242e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.939e-09   2.349e-09
    25- 50  1.196e-08   6.550e-09
    50-150  1.923e-08   1.462e-08
    15-150  3.813e-08   2.238e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 6.03482        (-3.45378      4.99505)
    R1^2/D10^2  : 1.16194        (-0.995952      36.8392)
    kT2 [keV]   : 21.0049        (-9.31065      -21.2093)
    R2^2/D10^2  : 1.34769E-02    (-0.0134614   0.119899)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.58 using 59 PHA bins.
    # Reduced chi-squared =          1.247 for     55 degrees of freedom 
    # Null hypothesis probability =   1.030873e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.793e-09   4.117e-09
    25- 50  1.150e-08   6.255e-09
    50-150  1.953e-08   1.217e-08
    15-150  3.782e-08   2.054e-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: 1.59781     ( -0.123422   0.125238 )
    Norm@50keV  : 1.95645E-03    ( -0.000141397   0.000140132 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.41 using 59 PHA bins.
    # Reduced chi-squared =         0.9370 for     57 degrees of freedom 
    # Null hypothesis probability =   6.105219e-01
     
    Photon flux (15-150 keV)    in 60.63 sec: 0.251243 ( -0.0168361  0.016847 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.10964e-06 ( -8.72126e-08  8.82609e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.35773     ( -0.492457   0.304521 )
    Epeak [keV] : 126.802      ( -57.0264 -126.802 )
    Norm@50keV  : 2.61581E-03    ( -0.000745042   0.00206477 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          52.57 using 59 PHA bins.
    # Reduced chi-squared =         0.9388 for     56 degrees of freedom 
    # Null hypothesis probability =   6.053853e-01
     
    Photon flux (15-150 keV)    in 60.63 sec: 0.247978 ( -0.017856  0.017831 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.08304e-06 ( -1.00537e-07  9.86208e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.35837   ( -0.196322   0.531 )
    beta        : -10.0000    ( 10   1.06581e-14 )
    Epeak [keV] : 126.429      ( -56.6899 -126.437 )
    Norm@50keV   : 2.61616E-03    ( -0.000773834   0.00206462 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          52.57 using 59 PHA bins.
    # Reduced chi-squared =         0.9559 for     55 degrees of freedom 
    # Null hypothesis probability =   5.679077e-01
     
    Photon flux (15-150 keV)    in 60.63 sec: 0.246442 (    ) 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)  = 3.19e-07
    S(50-100 keV) = 3.88e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 61.2559999227524 sec.
    Hardness ratio (energy fluence ratio) = 1.2163
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.203
    Count Ratio (50-100 keV) / (15-25 keV) = 0.752346
    

    Mask shadow pattern

    IMX = 3.169507521572804E-01, IMY = 1.729227277776173E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 4.096000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 4.096000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 4.096000
    

    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:
    -239.624000 -24.752000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    119.5113  29.0995    2.9  43.4  160.5   3.1401   4.1 ------	UNKNOWN                       
    181.6244  64.0018    3.3  13.7   37.3   1.0944   3.5 ------	UNKNOWN                       
    273.5135  47.6238    3.4  56.4  -16.5   4.0004   3.4 ------	UNKNOWN                       
     42.9076  71.6806    2.4  31.2  -94.0   2.1690   4.7 ------	UNKNOWN                       
    348.6917  67.7828    3.4  42.5  -69.2   4.8346   3.4 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -24.752000 35.876600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    108.8372  29.2816    1.8  46.0  173.2   1.2152   6.4 ------	UNKNOWN                       
    229.5714  61.6525    2.2  31.8    4.3   0.5931   5.2 ------	UNKNOWN                       
    219.1226  79.6777    0.6  19.9  -28.6   1.8951  20.6 ------	UNKNOWN                       
    264.3770  43.0810    2.7  58.3   -7.4   2.3159   4.3 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    81.076600 962.389400
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.5862  35.3309   20.2  46.5   -1.7  -0.5422  -0.6    6.3	Her X-1                       
    244.1700  26.7860    3.2  54.0   11.1   6.3867   3.6 ------	UNKNOWN                       
    128.2402  74.0845    2.7  19.0  161.8   1.8933   4.3 ------	UNKNOWN                       
     40.5183  47.1049    2.9  53.2 -142.2  10.8523   3.9 ------	UNKNOWN                       
     24.5181  52.1135    2.5  47.9 -129.0   9.6344   4.6 ------	UNKNOWN                       
    
    Plot creation:
    Sat May 30 20:08:18 EDT 2015