batgrbproduct Analysis for Trigger=500100

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Aug 12 13:17:40 EDT 2011
             Host Name: gcn5
   Current Working Dir: /local/data/raid16/prebascript_archive/trigger500100/GCN5_download_cron
======================================================================

  Trigger: 00500100      Segment: 000

  BAT Trigger Time: 334823891.136   [s; MET]
      Trigger Stop: 334823918.016   [s; MET]
               UTC: 2011-08-12T06:38:03.884040    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 135.531579592115   Dec: -40.558481890169  [deg; J2000]

     Catalogged Source?: YES
     Point Source?:      YES
     GRB Indicated?:     NO    [ by BAT flight software ]
     Image S/N Ratio:    16.84
     Image Trigger?:     NO
     Rate S/N Ratio:     31.6701752442262  [ if not an image trigger ]
     Image S/N Ratio:    16.84

  Flight Position:   [ source = BAT ]
    RA: 135.531579592115   Dec: -40.558481890169  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 135.29803252226   Dec: -40.5245979701403  [deg; J2000]  
        { 09h 01m 11.5s , -40d 31' 28.6" }
         +/- 10.7588915732078 [arcmin] (estimated 90% radius based on SNR)
         +/- 9.25520109534102 [arcmin] (formal 1-sigma fit error)
    SNR: 1.02132688582196
 
  Angular difference between Flight and Ground position is 10.841164 arcmin
 
  Partial Coding Fraction: 0.9609375    [ including projection effects ]

  Duration
     T90: 451.199999988079 +/- 111.338388671289
        Measured from: -170.079999864101
                   to: 281.120000123978     [s; relative to TRIGTIME]
     T50: 92.9919999837875 +/- 176.688833857157
        Measured from: -61.5359998345375
                   to: 31.45600014925     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 25.3560000061989     
                   to: 26.3560000061989     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -181.215999960899     
                   to: 380.896000027657     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     8.326549   5.079895   0.245744   0.095615
           0.113921   0.113603   0.099069   0.090643 [error]
 Peak      0.042638   0.029608   0.003523   0.008060
           0.005101   0.005149   0.004208   0.003715 [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 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux Power-law 3.76e-01 1.96e-01 6.35e-02 2.65e-02 6.50e-01 6.62e-01   ph/cm2/s
              Error 7.58e-02 4.21e-02 2.74e-02 2.04e-02 1.15e-01 1.19e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.36e-06 2.07e-06 1.16e-07 5.33e-11 4.55e-06 4.55e-06   erg/cm2
              Error 1.95e-07 8.96e-08 3.64e-08 1.04e-10 2.25e-07 2.25e-07   erg/cm2
Peak flux Cutoff-PL 3.61e-01 2.42e-01 2.58e-02 1.83e-04 6.28e-01 6.28e-01   ph/cm2/s
              Error 8.47e-02 6.05e-02 3.25e-02 5.30e-03 1.10e-01 1.10e-01   ph/cm2/s
 
Fluence        Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   erg/cm2
Peak flux      Band 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
              Error 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00 0.00e+00   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    3.426    0.000    -      -           6.72e-04 0.00e+00  216.110 57
CPL   1.000    0.000      50.0    0.0      2.74e-03 0.00e+00  973.630 56
 
The chi2 of BB fit is 39.55 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    2.626    0.403    -      -           3.06e-03 1.02e-03   78.270 57
CPL  -0.045    3.444      23.3    0.0      2.13e-01 0.00e+00   74.370 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  562.112 -181.216  380.896
T90   451.200 -170.080  281.120
T50    92.992  -61.536   31.456
Peak    1.000   25.356   26.356
  • Click here for the BAT GCN circular template

    Image

    Pre-slew 15-350 keV image (Event data; bkg subtracted)

    #   RAcent  DECcent POSerr  Theta    Phi     Peak Cts     SNR  Name
      135.2980 -40.5246 0.1887    8.2   94.2       0.3686     1.0  TRIG_00500100       
    ------------------------------------------
     
    Foreground time interval of the image:
    -181.216 -56.261 (delta_t = 124.955 [sec])
    -55.136  85.565 (delta_t = 140.701 [sec])
    Background time interval of the image:
    -239.136 -181.216 (delta_t =  57.920 [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 26.880000
    

    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 26.880000
    

    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 26.880000
    

    SN=5 or 10 sec. binning (whichever binning is satisfied first)

    SN=5 or 10 sec. binning (T < 200 sec)

    The mask-weighted light curves based on cleaned DPHs

    Spectra

    Notes:

    Time averaged spectrum fit using the pre-slew DRM

    Power-law model
    Multiple GTIs in the spectrum
    tstart tstop
    -181.216000 -56.261500
    -55.136000 380.896000
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 3.42589     (     )
    Norm@50keV  : 6.72111E-04    (     )
    ------------------------------------------------------------
    # Chi-Squared =         216.11 using 59 PHA bins.
    # Reduced chi-squared =         3.7915 for     57 degrees of freedom 
    # Null hypothesis probability =   2.313291e-20
     
    Photon flux (15-150 keV)    in 561 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) ergs/cm2
     
    
    Cutoff power-law model
    Multiple GTIs in the spectrum
    tstart tstop
    -181.216000 -56.261500
    -55.136000 380.896000
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.00000     (     )
    Epeak [keV] : 50.0000      (   )
    Norm@50keV  : 2.73874E-03    (     )
    ------------------------------------------------------------
    # Chi-Squared =         973.63 using 59 PHA bins.
    # Reduced chi-squared =         17.386 for     56 degrees of freedom 
    # Null hypothesis probability =  1.332707e-167
     
    Photon flux (15-150 keV)    in 561 sec: 0.209796 ( -0.012325  0.012418 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.54864e-06 ( -2.24641e-07  2.26133e-07 ) ergs/cm2
     
    
    Band function
    Multiple GTIs in the spectrum
    tstart tstop
    -181.216000 -56.261500
    -55.136000 380.896000
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 2.41602   ( -0.709345   1.46024 )
    beta        : -7.04217    ( 5.75928   0.0893744 )
    Epeak [keV] : 22.5976      ( -1.54679 0.706498 )
    Norm@50keV   : 6.22791    ( -7.2628   39.6495 )
    ------------------------------------------------------------
    # Chi-Squared =          37.88 using 59 PHA bins.
    # Reduced chi-squared =         0.6887 for     55 degrees of freedom 
    # Null hypothesis probability =   9.621416e-01
     
    Photon flux (15-150 keV)    in 561 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]    : 5.55764  (-0.166509  0.172453)
    R^2/D10^2   : 1.19975  (-0.179111   0.210778)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    # Chi-Squared =          39.55 using 59 PHA bins.
    # Reduced chi-squared =         0.6938 for     57 degrees of freedom 
    # Null hypothesis probability =   9.620621e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.454e-06   1.456e-07
    25- 50  2.061e-06   8.920e-08
    50-150  1.364e-07   2.121e-08
    15-150  4.651e-06   1.753e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 14.8752       (-0.822895      0.892144)
    Norm        : 4.46776       (-0.467567     0.524182)
    ------------------------------------------------------------
    # Chi-Squared =          93.87 using 59 PHA bins.
    # Reduced chi-squared =          1.647 for     57 degrees of freedom 
    # Null hypothesis probability =   1.518474e-03
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.884e-06   1.534e-07
    25- 50  1.950e-06   8.527e-08
    50-150  3.377e-07   5.167e-08
    15-150  5.171e-06   1.905e-07
    
    Double BB
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 199.984        (      )
    R1^2/D10^2  : 3.56305E-07        (-3.56305e-07      1.66143e-06)
    kT2 [keV]   : 5.55009        (-0.169515      0.175942)
    R2^2/D10^2  : 1.20709    (-0.182746   0.215501)
    ------------------------------------------------------------
    # Chi-Squared =          39.55 using 59 PHA bins.
    # Chi-Squared =          39.42 using 59 PHA bins.
    # Reduced chi-squared =         0.7191 for     55 degrees of freedom 
    # Reduced chi-squared =         0.7168 for     55 degrees of freedom 
    # Null hypothesis probability =   9.422793e-01
    # Null hypothesis probability =   9.439711e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.454e-06   8.224e+02
    25- 50  2.061e-06   7.635e+03
    50-150  1.364e-07   1.856e+05
    15-150  4.651e-06   1.783e+05
    

    Peak spectrum fit

    Power-law model
    Time interval is from   25.356 sec. to   26.356 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.62646     ( -0.370715   0.436147 )
    Norm@50keV  : 3.05535E-03    ( -0.00100119   0.00103154 )
    ------------------------------------------------------------
    # Chi-Squared =          78.27 using 59 PHA bins.
    # Reduced chi-squared =          1.373 for     57 degrees of freedom 
    # Null hypothesis probability =   3.227554e-02
     
    Photon flux (15-150 keV)    in 1 sec: 0.649890 ( -0.114835  0.115068 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.17123e-08 ( -7.20353e-09  7.76502e-09 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   25.356 sec. to   26.356 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -4.46030E-02     ( -4.63133   2.25596 )
    Epeak [keV] : 23.3133      (   )
    Norm@50keV  : 0.213145    (     )
    ------------------------------------------------------------
    # Chi-Squared =          74.37 using 59 PHA bins.
    # Reduced chi-squared =          1.328 for     56 degrees of freedom 
    # Null hypothesis probability =   5.080681e-02
     
    Photon flux (15-150 keV)    in 1 sec: 0.628285 ( -0.110118  0.110794 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.65718e-08 ( -5.3326e-09  6.3252e-09 ) ergs/cm2
     
    
    Band function
    Time interval is from   25.356 sec. to   26.356 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 0.944749   ( -2.23374   -0.965868 )
    beta        : -8.30421    ( 6.56136   16.5578 )
    Epeak [keV] : 24.8353      ( -6.43435 4.96248 )
    Norm@50keV   : 0.900808    ( -0.900822   570.555 )
    ------------------------------------------------------------
    # Chi-Squared =          74.31 using 59 PHA bins.
    # Reduced chi-squared =          1.351 for     55 degrees of freedom 
    # Null hypothesis probability =   4.241588e-02
     
    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]    : 6.56755  (-1.0214  1.15442)
    R^2/D10^2   : 1.69365  (-0.840326   1.76422)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    # Chi-Squared =          74.51 using 59 PHA bins.
    # Reduced chi-squared =          1.307 for     57 degrees of freedom 
    # Null hypothesis probability =   5.959895e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.093e-08   3.413e-09
    25- 50  1.319e-08   4.320e-09
    50-150  1.725e-09   1.071e-09
    15-150  2.584e-08   7.545e-09
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 24.6816       (-7.62946      12.4347)
    Norm        : 6.34906       (-2.03494     3.25504)
    ------------------------------------------------------------
    # Chi-Squared =          75.57 using 59 PHA bins.
    # Reduced chi-squared =          1.326 for     57 degrees of freedom 
    # Null hypothesis probability =   5.041119e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.153e-08   2.745e-09
    25- 50  1.172e-08   3.193e-09
    50-150  4.891e-09   3.372e-09
    15-150  2.814e-08   8.400e-09
    
    Double BB
    R1^2/D10^2  : 1.88797        (      )
    kT2 [keV]   : 185.156        (      )
    R2^2/D10^2  : 3.18275E-05    (-3.13761e-05   2.76627)
    ------------------------------------------------------------
    # Chi-Squared =          73.31 using 59 PHA bins.
    # Chi-Squared =          73.20 using 59 PHA bins.
    # Chi-Squared =          73.12 using 59 PHA bins.
    # Reduced chi-squared =          1.333 for     55 degrees of freedom 
    # Reduced chi-squared =          1.331 for     55 degrees of freedom 
    # Reduced chi-squared =          1.329 for     55 degrees of freedom 
    # Null hypothesis probability =   5.003242e-02
    # Null hypothesis probability =   5.095351e-02
    # Null hypothesis probability =   5.156734e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.087e-08   5.855e-09
    25- 50  1.320e-08   7.715e-09
    50-150  2.226e-09   1.581e-09
    15-150  2.630e-08   1.484e-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: 3.30014     (     )
    Norm@50keV  : 7.40685E-04    (     )
    ------------------------------------------------------------
    # Chi-Squared =         183.00 using 59 PHA bins.
    # Reduced chi-squared =         3.2105 for     57 degrees of freedom 
    # Null hypothesis probability =   3.940365e-15
     
    Photon flux (15-150 keV)    in 265.7 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 0 ( 0  0 ) 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  : 3.18268E-03    (     )
    ------------------------------------------------------------
    # Chi-Squared =         659.20 using 59 PHA bins.
    # Reduced chi-squared =         11.771 for     56 degrees of freedom 
    # Null hypothesis probability =  6.957564e-104
     
    Photon flux (15-150 keV)    in 265.7 sec: 0.217249 ( -0.013647  0.013705 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.22597e-06 ( -1.22488e-07  1.23519e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 3.01437   ( -0.982145   1.64638 )
    beta        : -7.44036    ( 5.73984   0.201329 )
    Epeak [keV] : 23.0432      ( -1.59673 0.901766 )
    Norm@50keV   : 17.3819    ( -17.3842   119.726 )
    ------------------------------------------------------------
    # Chi-Squared =          54.90 using 59 PHA bins.
    # Reduced chi-squared =         0.9982 for     55 degrees of freedom 
    # Null hypothesis probability =   4.783557e-01
     
    Photon flux (15-150 keV)    in 265.7 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)  = 
    S(50-100 keV) = 
    

    T90 vs. Hardness ratio plot

    T90                                   = 451.199999988079 sec.
    Hardness ratio (energy fluence ratio) = 
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.610084
    Count Ratio (50-100 keV) / (15-25 keV) = 0.0295133
    

    Mask shadow pattern

    IMX = -1.062384972716201E-02, IMY = -1.437822354218976E-01
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 26.880000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 26.880000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 26.880000
    

    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:
    -239.136000 -181.216000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5508 -40.5370    1.1   8.2   92.9   0.7602  10.3    1.5	Vela X-1                      
    170.3024 -60.6408    7.2  35.9   61.3   0.2768   1.6    1.1	Cen X-3                       
     80.2046 -14.8589    2.3  53.6 -175.6   1.1266   5.0 ------	UNKNOWN                       
     97.7864 -14.8656    2.2  39.0 -163.4   0.5594   5.2 ------	UNKNOWN                       
    108.6435   7.7593    2.2  48.0 -129.0   1.7078   5.2 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -181.216000 -56.261500
    -55.136000 85.564600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.3339 -40.5314    9.5   8.2   94.0   0.4275   1.2    9.0	Vela X-1                      
    170.5694 -60.5893   19.0  36.0   61.1  -0.5024  -0.6    7.7	Cen X-3                       
    136.7503 -40.5380    1.8   8.2   86.5   2.2363   6.3 ------	UNKNOWN                       
     74.7175 -16.8541    2.7  57.3  179.1   8.7450   4.3 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    113.764600 422.917900
    540.864000 602.967300
    780.864000 842.975200
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.5261 -40.5599    0.3   0.0  122.4  11.0134  42.7    0.3	Vela X-1                      
    170.5311 -60.6257    8.0  29.3   48.0   0.5068   1.4    6.3	Cen X-3                       
    186.6195 -62.8008    2.9  37.2   47.0   2.0748   4.0    2.1	GX 301-2                      
    148.8314 -37.5011    2.3  10.7  -19.1   1.2934   4.9 ------	UNKNOWN                       
    103.7570 -24.2947    2.3  31.1 -165.3   1.3807   5.1 ------	UNKNOWN                       
    176.8598 -14.1910    2.7  44.5  -31.1   2.1653   4.3 ------	UNKNOWN                       
    
    Plot creation:
    Fri Aug 12 13:35:25 EDT 2011