batgrbproduct Analysis for Trigger=529606

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Jan 13 02:17:46 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger529606
======================================================================

  Trigger: 00529606      Segment: 000

  BAT Trigger Time: 365684776.448   [s; MET]
      Trigger Stop: 365684777.472   [s; MET]
               UTC: 2012-08-03T11:06:06.951500    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 314.22374452902   Dec: 53.2824925997842  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.12
     Image Trigger?:     NO
     Rate S/N Ratio:     12.4899959967968  [ if not an image trigger ]
     Image S/N Ratio:    8.12

  Flight Position:   [ source = BAT ]
    RA: 314.22374452902   Dec: 53.2824925997842  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 314.220410918838   Dec: 53.295278350025  [deg; J2000]  
        { 20h 56m 52.9s , +53d 17' 43.0" }
         +/- 0.841851231597906 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.352947761609905 [arcmin] (formal 1-sigma fit error)
    SNR: 38.8977983505519
 
  Angular difference between Flight and Ground position is 0.776407 arcmin
 
  Partial Coding Fraction: 0.5859375    [ including projection effects ]

  Duration
     T90: 39.0119999051094 +/- 7.25639468561777
        Measured from: -0.143999993801117
                   to: 38.8679999113083     [s; relative to TRIGTIME]
     T50: 12.3759999275208 +/- 1.7875166980481
        Measured from: 3.88400000333786
                   to: 16.2599999308586     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 4.49199998378754     
                   to: 5.49199998378754     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.67199999094009     
                   to: 52.055999994278     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.658049   1.096268   0.850035   0.240980
           0.042941   0.044855   0.040129   0.034323 [error]
 Peak      0.044600   0.069012   0.063226   0.013176
           0.006796   0.007565   0.006953   0.005565 [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 2.18e-07 4.38e-07 6.84e-07 2.36e-06 1.91e-06 3.70e-06   erg/cm2
              Error 1.92e-08 2.31e-08 3.98e-08 3.04e-07 9.89e-08 3.30e-07   erg/cm2
Peak flux Power-law 4.29e-01 4.93e-01 4.07e-01 5.63e-01 1.53e+00 1.89e+00   ph/cm2/s
              Error 8.77e-02 6.33e-02 5.56e-02 1.57e-01 1.80e-01 2.29e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.97e-07 4.58e-07 7.10e-07 1.18e-06 1.84e-06 2.54e-06   erg/cm2
              Error 2.34e-08 2.73e-08 4.47e-08 5.44e-07 1.11e-07 5.45e-07   erg/cm2
Peak flux Cutoff-PL 3.88e-01 5.25e-01 4.28e-01 2.88e-01 1.50e+00 1.63e+00   ph/cm2/s
              Error 1.03e-01 7.85e-02 6.47e-02 -------- 1.84e-01 3.22e-01   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    1.356    0.083    -      -           3.57e-03 1.69e-04   58.020 57
CPL   0.847    0.362     118.3   80.7      6.30e-03 2.59e-03   51.490 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.278    0.190    -      -           1.29e-02 1.49e-03   61.380 57
CPL   0.677    0.824     110.1  -34.4      2.61e-02 3.34e-02   59.710 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: 16.896000 sec.
T50 in the 50-300 keV band: 6.976000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   54.728   -2.672   52.056
T90    39.012   -0.144   38.868
T50    12.376    3.884   16.260
Peak    1.000    4.492    5.492
  • 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
      314.2204    53.2953   0.0050    28.0762   141.1999         1.8206186     38.898 TRIG_00529606                 
     
    Foreground time interval of the image:
     -2.672  10.853 (delta_t =  13.525 [sec])
    Background time interval of the image:
    -594.147 -498.933 (delta_t =  95.214 [sec])
    -239.448  -2.672 (delta_t = 236.776 [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)

    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   -2.672 sec. to   52.056 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.35608     ( -0.0833385   0.0831225 )
    Norm@50keV  : 3.57321E-03    ( -0.000168773   0.000168739 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.02 using 59 PHA bins.
    # Reduced chi-squared =          1.018 for     57 degrees of freedom 
    # Null hypothesis probability =   4.373934e-01
     
    Photon flux (15-150 keV)    in 54.73 sec: 0.431010 ( -0.021181  0.0212156 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.90742e-06 ( -9.87176e-08  9.90925e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -2.672 sec. to   52.056 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.846603     ( -0.377314   0.346309 )
    Epeak [keV] : 118.289      ( -29.8652 131.461 )
    Norm@50keV  : 6.30297E-03    ( -0.00197681   0.00319996 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          51.49 using 59 PHA bins.
    # Reduced chi-squared =         0.9195 for     56 degrees of freedom 
    # Null hypothesis probability =   6.459442e-01
     
    Photon flux (15-150 keV)    in 54.73 sec: 0.419854 ( -0.022432  0.02244 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.83851e-06 ( -1.11102e-07  1.10379e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from   -2.672 sec. to   52.056 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.108551   ( -0.700842   1.71497 )
    beta        : -1.62095    ( -0.32411   0.182995 )
    Epeak [keV] : 63.6723      ( -25.6888 56.774 )
    Norm@50keV   : 1.73946E-02    ( -0.0113331   0.19398 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          48.44 using 59 PHA bins.
    # Reduced chi-squared =         0.8808 for     55 degrees of freedom 
    # Null hypothesis probability =   7.216608e-01
     
    Photon flux (15-150 keV)    in 54.73 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]    : 16.4776  (  )
    R^2/D10^2   : 3.63110E-02  (   )
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         117.14 using 59 PHA bins.
    # Reduced chi-squared =         2.0551 for     57 degrees of freedom 
    # Null hypothesis probability =   4.785335e-06
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.108e-07   1.084e-08
    25- 50  4.779e-07   3.166e-08
    50-150  9.168e-07   8.100e-08
    15-150  1.506e-06   8.647e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (      )
    Norm        : 1.79423       (-0.0849379     0.0849252)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          68.72 using 59 PHA bins.
    # Reduced chi-squared =          1.206 for     57 degrees of freedom 
    # Null hypothesis probability =   1.374713e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.446e-07   1.382e-08
    25- 50  4.705e-07   2.435e-08
    50-150  1.032e-06   5.528e-08
    15-150  1.747e-06   9.140e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 9.79927        (-1.63466      1.64125)
    R1^2/D10^2  : 0.143503        (-0.0492921      0.0935658)
    kT2 [keV]   : 35.8201        (-8.64593      20.7387)
    R2^2/D10^2  : 1.90055E-03    (-0.00139911   0.00309793)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          49.47 using 59 PHA bins.
    # Reduced chi-squared =         0.8994 for     55 degrees of freedom 
    # Null hypothesis probability =   6.851561e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.711e-07   2.799e-08
    25- 50  4.909e-07   6.729e-08
    50-150  1.196e-06   4.801e-07
    15-150  1.858e-06   5.358e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    4.492 sec. to    5.492 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.27810     ( -0.190844   0.188847 )
    Norm@50keV  : 1.28997E-02    ( -0.00149229   0.00148949 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.38 using 59 PHA bins.
    # Reduced chi-squared =          1.077 for     57 degrees of freedom 
    # Null hypothesis probability =   3.219324e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.53293 ( -0.179443  0.179645 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.28169e-07 ( -1.64448e-08  1.6596e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    4.492 sec. to    5.492 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.676560     ( -0.962937   0.684604 )
    Epeak [keV] : 110.139      ( -41.3201 -110.136 )
    Norm@50keV  : 2.61439E-02    ( -0.0141262   0.0527075 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.71 using 59 PHA bins.
    # Reduced chi-squared =          1.066 for     56 degrees of freedom 
    # Null hypothesis probability =   3.422949e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.50432 ( -0.18474  0.18406 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.22525e-07 ( -1.8633e-08  1.8401e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    4.492 sec. to    5.492 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 5.00000   ( -4.80207   -5 )
    beta        : -1.44844    ( -0.302218   0.232724 )
    Epeak [keV] : 28.6373      ( -7.26345 6.40789 )
    Norm@50keV   : 528.037    ( -60.0871   2475.23 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.99 using 59 PHA bins.
    # Reduced chi-squared =          1.036 for     55 degrees of freedom 
    # Null hypothesis probability =   4.009418e-01
     
    Photon flux (15-150 keV)    in 1 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]    : 16.2614  (-2.16917  2.61459)
    R^2/D10^2   : 0.140701  (-0.0562532   0.0889823)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          70.00 using 59 PHA bins.
    # Reduced chi-squared =          1.228 for     57 degrees of freedom 
    # Null hypothesis probability =   1.156070e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.664e-09   1.794e-09
    25- 50  3.270e-08   5.225e-09
    50-150  6.080e-08   1.406e-08
    15-150  1.012e-07   1.603e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (      )
    Norm        : 6.33325       (-0.73584     0.73579)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.37 using 59 PHA bins.
    # Reduced chi-squared =          1.147 for     57 degrees of freedom 
    # Null hypothesis probability =   2.088677e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.577e-08   8.905e-09
    25- 50  3.034e-08   1.658e-08
    50-150  6.654e-08   3.675e-08
    15-150  1.126e-07   5.660e-08
    
    Double BB
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 12.3138        (-5.69184      2.55563)
    R1^2/D10^2  : 0.306478        (-0.161382      1.43944)
    kT2 [keV]   : 200.000        (      )
    R2^2/D10^2  : 1.83636E-04    (-8.15521e-05   0.00095453)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.17 using 59 PHA bins.
    #Fit statistic : Chi-Squared =          58.08 using 59 PHA bins.
    # Reduced chi-squared =          1.058 for     55 degrees of freedom 
    # Reduced chi-squared =          1.056 for     55 degrees of freedom 
    # Null hypothesis probability =   3.592741e-01
    # Null hypothesis probability =   3.624887e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.032e-08   3.628e-09
    25- 50  3.381e-08   1.099e-08
    50-150  7.968e-08   5.155e-08
    15-150  1.238e-07   6.035e-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: 1.15361     ( -0.0783269   0.0776043 )
    Norm@50keV  : 9.15026E-03    ( -0.000411   0.000410806 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.04 using 59 PHA bins.
    # Reduced chi-squared =          1.088 for     57 degrees of freedom 
    # Null hypothesis probability =   3.011303e-01
     
    Photon flux (15-150 keV)    in 13.52 sec: 1.06757 ( -0.0499445  0.050017 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.27216e-06 ( -6.14936e-08  6.16457e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.656726     ( -0.339642   0.31469 )
    Epeak [keV] : 150.373      ( -39.5335 152.472 )
    Norm@50keV  : 1.54591E-02    ( -0.00426925   0.00640707 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.46 using 59 PHA bins.
    # Reduced chi-squared =         0.9725 for     56 degrees of freedom 
    # Null hypothesis probability =   5.333138e-01
     
    Photon flux (15-150 keV)    in 13.52 sec: 1.04361 ( -0.052056  0.0521 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.23794e-06 ( -6.6463e-08  6.61601e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 0.704833   ( -1.16172   -0.0791356 )
    beta        : -1.33100    ( 1.35403   0.158149 )
    Epeak [keV] : 54.0330      ( -35.2553 118.05 )
    Norm@50keV   : 0.114606    ( -0.113498   65.2487 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          52.15 using 59 PHA bins.
    # Reduced chi-squared =         0.9481 for     55 degrees of freedom 
    # Null hypothesis probability =   5.843115e-01
     
    Photon flux (15-150 keV)    in 13.52 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)  = 4.38e-07
    S(50-100 keV) = 6.84e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 39.0119999051094 sec.
    Hardness ratio (energy fluence ratio) = 1.56164
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.66594
    Count Ratio (50-100 keV) / (15-25 keV) = 1.29175
    

    Mask shadow pattern

    IMX = -4.157109539910061E-01, IMY = -3.342416998680984E-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:
    -594.147380 -498.933500
    -239.448000 -2.672000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    308.1476  40.9679    2.4  40.1  132.5   2.8999   4.8    1.9	Cyg X-3                       
    326.0154  38.3832   11.5  34.9  111.1  -0.5102  -1.0    8.2	Cyg X-2                       
     79.4888  36.3134    3.8  50.7  -44.5   4.0345   3.0 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -2.672000 10.852600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    308.0158  40.8175   18.5  40.3  132.4  -0.0639  -0.6    9.2	Cyg X-3                       
    326.3443  38.4330   74.7  34.8  110.7   0.0138   0.2   10.5	Cyg X-2                       
    314.2204  53.2953    0.3  28.1  141.2   1.8202  38.9 ------	UNKNOWN                       
    117.4192  65.6928    2.1  40.9  -95.0   0.7750   5.5 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    59.452600 228.452600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.5619  35.4492    4.7  44.7 -178.7  -0.5776  -2.5    8.2	Her X-1                       
    299.6233  35.2301    1.2  20.8  125.4   1.3738   9.4    2.4	Cyg X-1                       
    308.1465  40.9675    1.1  13.0  110.8   1.4306  10.5    1.9	Cyg X-3                       
    325.9662  38.2426    4.7  17.1   57.0   0.3570   2.5   10.8	Cyg X-2                       
    265.7856  17.2918    3.0  51.9  155.1   2.5901   3.8 ------	UNKNOWN                       
    240.8943  29.3230    2.5  57.2 -173.8   3.0801   4.6 ------	UNKNOWN                       
    228.9446  36.7436    4.3  58.7 -159.2   2.8841   2.7 ------	UNKNOWN                       
    
    Plot creation:
    Sat May 30 18:55:13 EDT 2015