batgrbproduct Analysis for Trigger=150139

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jan 22 21:00:12 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger150139
======================================================================

  Trigger: 00150139      Segment: 000

  BAT Trigger Time: 145608309.44   [s; MET]
      Trigger Stop: 145608309.952   [s; MET]
               UTC: 2005-08-13T06:45:09.768120    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 242.009891218405   Dec: 11.2520458868854  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.27
     Image Trigger?:     NO
     Rate S/N Ratio:     7.74596669241483  [ if not an image trigger ]
     Image S/N Ratio:    7.27

  Flight Position:   [ source = BAT ]
    RA: 242.009891218405   Dec: 11.2520458868854  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 242.01   Dec: 11.252  [deg; J2000]
        { 16h 08m 02.4s , +11d 15' 07.2" }
        +/- 2.78639273751 [arcmin] (estimated 90% radius based on SNR)
    SNR: 7.03720886696
 
 
  Angular difference between Flight and Ground position is 0.006968 arcmin
 
  Partial Coding Fraction: 0.4804688    [ including projection effects ]

  Duration
     T90: 0.384000033140182 +/- 0.111946409943277
        Measured from: -0.00400000810623169
                   to: 0.380000025033951     [s; relative to TRIGTIME]
     T50: 0.188000023365021 +/- 0.132966175955436
        Measured from: 0.0879999995231628
                   to: 0.276000022888184     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.303999990224838     
                   to: 0.696000009775162     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.0239999890327454     
                   to: 0.412000000476837     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.011601   0.026580   0.021005   0.000719
           0.004787   0.004860   0.004559   0.004171 [error]
 Peak      0.015804   0.024329   0.020997  -0.001068
           0.006896   0.007109   0.006657   0.006008 [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 4.04e-09 8.86e-09 1.53e-08 6.12e-08 4.19e-08 8.94e-08   erg/cm2
              Error 1.58e-09 2.23e-09 3.97e-09 3.34e-08 1.02e-08 3.62e-08   erg/cm2
Peak flux Power-law 1.34e-01 1.58e-01 1.34e-01 1.94e-01 4.96e-01 6.21e-01   ph/cm2/s
              Error 7.55e-02 5.83e-02 5.10e-02 1.50e-01 1.66e-01 2.14e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.54e-09 1.11e-08 1.69e-08 5.43e-09 3.51e-08 3.60e-08   erg/cm2
              Error 1.72e-09 3.13e-09 5.63e-09 1.26e-08 1.07e-08 1.58e-08   erg/cm2
Peak flux Cutoff-PL 8.29e-02 1.95e-01 1.51e-01 2.42e-02 4.51e-01 4.53e-01   ph/cm2/s
              Error 6.62e-02 8.11e-02 7.08e-02 1.05e-01 1.70e-01 1.58e-01   ph/cm2/s
 
Fluence        Band 2.27e-09 1.24e-08 1.49e-08 2.44e-08 3.79e-08 5.41e-08   erg/cm2
              Error 1.43e-09 3.18e-09 4.56e-09 -------- 1.06e-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    1.213    0.350    -      -           9.49e-03 2.15e-03   54.080 57
CPL  -1.422    2.526      64.6   29.7      1.94e-01 3.65e+00   47.790 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.235    0.530    -      -           4.20e-03 1.39e-03   58.550 57
CPL  -1.447    4.555      62.5  477.9      9.55e-02 5.88e+01   55.800 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    0.436   -0.024    0.412
T90     0.384   -0.004    0.380
T50     0.188    0.088    0.276
Peak    1.000   -0.304    0.696
  • Click here for the BAT GCN circular template
  • Special notes of this burst

    Image

    Pre-slew 25.0-100.0 keV image (Event data)

    #RAcent DECcent POSerr Theta  Phi  Peak_Cts  SNR Name
    242.010 11.252 0.000 26.983 110.380 0.051 7.037 TRIG_00150139
     
    Image time interval: 0.000 to 0.512 [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 0.512000
    

    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 0.512000
    

    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 0.512000
    

    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   -0.024 sec. to    0.412 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.21318     ( -0.355286   0.344386 )
    Norm@50keV  : 9.49449E-03    ( -0.00214829   0.00214826 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.08 using 59 PHA bins.
    # Reduced chi-squared =         0.9488 for     57 degrees of freedom 
    # Null hypothesis probability =   5.853443e-01
     
    Photon flux (15-150 keV)    in 0.436 sec: 1.11645 ( -0.258162  0.259584 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.18533e-08 ( -1.01445e-08  1.03271e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.024 sec. to    0.412 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -1.42172     ( -3.13905   1.91298 )
    Epeak [keV] : 64.5728      ( -15.0655 44.3646 )
    Norm@50keV  : 0.194169    ( -0.194397   7.10639 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.79 using 59 PHA bins.
    # Reduced chi-squared =         0.8534 for     56 degrees of freedom 
    # Null hypothesis probability =   7.743365e-01
     
    Photon flux (15-150 keV)    in 0.436 sec: 1.02237 ( -0.256329  0.26505 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.5133e-08 ( -1.00853e-08  1.12195e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.024 sec. to    0.412 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 5.00000   ( -5.06433   -5 )
    beta        : -2.08022    ( -1.61782   0.679792 )
    Epeak [keV] : 43.7526      ( -10.2384 10.4837 )
    Norm@50keV   : 36.2672    ( -7.60195   132.185 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          46.58 using 59 PHA bins.
    # Reduced chi-squared =         0.8469 for     55 degrees of freedom 
    # Null hypothesis probability =   7.833085e-01
     
    Photon flux (15-150 keV)    in 0.436 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.7883e-08 ( -3.78799e-08  -1.03773e-08 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 16.5263  (-3.38155  4.56312)
    R^2/D10^2   : 0.104332  (-0.0593258   0.124677)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.93 using 59 PHA bins.
    # Reduced chi-squared =         0.8409 for     57 degrees of freedom 
    # Null hypothesis probability =   7.983408e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.549e-09   1.169e-09
    25- 50  1.102e-08   4.914e-09
    50-150  2.129e-08   8.890e-09
    15-150  3.486e-08   1.309e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (-83.5483      -199.363)
    Norm        : 4.67466       (-1.06803     1.06803)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.10 using 59 PHA bins.
    # Reduced chi-squared =         0.9666 for     57 degrees of freedom 
    # Null hypothesis probability =   5.468170e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.075e-09   3.032e-09
    25- 50  9.763e-09   5.762e-09
    50-150  2.141e-08   1.261e-08
    15-150  3.625e-08   2.123e-08
    
    Double BB
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 73.8861        (-75.0507      -75.0507)
    R1^2/D10^2  : 2.11569E-04        (-0.00019734      -0.00019734)
    kT2 [keV]   : 15.3403        (-15.3564      5.56232)
    R2^2/D10^2  : 0.124985    (-0.124716   0.166261)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.80 using 59 PHA bins.
    #Fit statistic : Chi-Squared =          47.77 using 59 PHA bins.
    # Reduced chi-squared =         0.8692 for     55 degrees of freedom 
    # Reduced chi-squared =         0.8686 for     55 degrees of freedom 
    # Null hypothesis probability =   7.435348e-01
    # Null hypothesis probability =   7.446126e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.767e-09   4.539e-08
    25- 50  1.107e-08   4.142e-07
    50-150  2.238e-08   5.271e-06
    15-150  3.621e-08   6.002e-06
    

    Peak spectrum fit

    Power-law model
    Time interval is from   -0.304 sec. to    0.696 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.23506     ( -0.539578   0.520556 )
    Norm@50keV  : 4.20344E-03    ( -0.00139032   0.001389 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.55 using 59 PHA bins.
    # Reduced chi-squared =          1.027 for     57 degrees of freedom 
    # Null hypothesis probability =   4.182644e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.495924 ( -0.165829  0.16688 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.22416e-08 ( -1.50681e-08  1.55919e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -0.304 sec. to    0.696 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -1.44740     ( -6.37991   2.73033 )
    Epeak [keV] : 62.5110      ( -18.3276 937.524 )
    Norm@50keV  : 9.54756E-02    ( -0.0963976   117.5 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.80 using 59 PHA bins.
    # Reduced chi-squared =         0.9964 for     56 degrees of freedom 
    # Null hypothesis probability =   4.825578e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.450860 ( -0.166532  0.17289 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.47205e-08 ( -1.38549e-08  1.72473e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -0.304 sec. to    0.696 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 2.52449   ( -8.46498   -2.52412 )
    beta        : -2.49056    ( 2.49467   1.43775 )
    Epeak [keV] : 53.6495      ( -22.6768 178.562 )
    Norm@50keV   : 0.416045    ( -0.413373   7.04803 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.73 using 59 PHA bins.
    # Reduced chi-squared =          1.013 for     55 degrees of freedom 
    # Null hypothesis probability =   4.472030e-01
     
    Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.67354e-08 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 15.9971  (-4.42883  7.11118)
    R^2/D10^2   : 5.11794E-02  (-0.0511794   0.104527)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.83 using 59 PHA bins.
    # Reduced chi-squared =         0.9795 for     57 degrees of freedom 
    # Null hypothesis probability =   5.190041e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.708e-09   1.717e-09
    25- 50  1.139e-08   6.840e-09
    50-150  2.038e-08   1.322e-08
    15-150  3.448e-08   2.233e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (-120.137      -199.363)
    Norm        : 2.06071       (-0.684911     0.684926)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          58.87 using 59 PHA bins.
    # Reduced chi-squared =          1.033 for     57 degrees of freedom 
    # Null hypothesis probability =   4.070100e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.131e-09   3.204e-09
    25- 50  9.871e-09   5.870e-09
    50-150  2.165e-08   1.336e-08
    15-150  3.665e-08   2.222e-08
    
    Double BB
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 200.000        (-200      -200)
    R1^2/D10^2  : 1.39702E-05        (-1.39703e-05      -1.39703e-05)
    kT2 [keV]   : 15.2576        (-5.23598      7.76329)
    R2^2/D10^2  : 5.76838E-02    (-0.0431069   0.0962912)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          55.82 using 59 PHA bins.
    #Fit statistic : Chi-Squared =          55.77 using 59 PHA bins.
    # Reduced chi-squared =          1.015 for     55 degrees of freedom 
    # Reduced chi-squared =          1.014 for     55 degrees of freedom 
    # Null hypothesis probability =   4.439765e-01
    # Null hypothesis probability =   4.454959e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.810e-09   1.075e-06
    25- 50  1.137e-08   9.320e-06
    50-150  2.065e-08   2.423e-04
    15-150  3.483e-08   2.795e-04
    

    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: 1.21318     ( -0.355286   0.344386 )
    Norm@50keV  : 9.49449E-03    ( -0.00214829   0.00214826 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.08 using 59 PHA bins.
    # Reduced chi-squared =         0.9488 for     57 degrees of freedom 
    # Null hypothesis probability =   5.853443e-01
     
    Photon flux (15-150 keV)    in 0.436 sec: 1.11645 ( -0.258162  0.259584 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.18533e-08 ( -1.01445e-08  1.03271e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: -1.42172     ( -3.13905   1.91298 )
    Epeak [keV] : 64.5728      ( -15.0655 44.3646 )
    Norm@50keV  : 0.194169    ( -0.194397   7.10639 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.79 using 59 PHA bins.
    # Reduced chi-squared =         0.8534 for     56 degrees of freedom 
    # Null hypothesis probability =   7.743365e-01
     
    Photon flux (15-150 keV)    in 0.436 sec: 1.02237 ( -0.256329  0.26505 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.5133e-08 ( -1.00853e-08  1.12195e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 5.00000   ( -5.06433   -5 )
    beta        : -2.08022    ( -1.61782   0.679792 )
    Epeak [keV] : 43.7526      ( -10.2384 10.4837 )
    Norm@50keV   : 36.2672    ( -7.60195   132.185 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          46.58 using 59 PHA bins.
    # Reduced chi-squared =         0.8469 for     55 degrees of freedom 
    # Null hypothesis probability =   7.833085e-01
     
    Photon flux (15-150 keV)    in 0.436 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.7883e-08 ( -3.78799e-08  -1.03773e-08 ) ergs/cm2
     
    

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

    S(25-50 keV)  = 8.86e-09
    S(50-100 keV) = 1.53e-08
    

    T90 vs. Hardness ratio plot

    T90                                   = 0.384000033140182 sec.
    Hardness ratio (energy fluence ratio) = 1.72686
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 2.29118
    Count Ratio (50-100 keV) / (15-25 keV) = 1.81062
    

    Mask shadow pattern

    IMX = -0.177306549307, IMY = -0.477271609489
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 0.512000
    

    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:
    -299.440000 -0.024000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.6357  35.3113    6.1  30.9   54.0   0.5186   1.9    8.9	Her X-1                       
    193.7842 -25.8736    3.6  59.0 -166.1   3.6435   3.2 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -0.024000 0.412000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    254.4352  35.1870    3.2  30.7   54.2   0.0340   3.5    9.4	Her X-1                       
    241.9926  11.2491    1.7  27.0  110.4   0.0617   7.0 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    57.860600 302.623500
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    244.9876 -15.6395    0.2  27.1  157.5  14.5617  63.3    0.5	Sco X-1                       
    254.4229  35.3361    3.9  26.6    7.0   0.6577   3.0    1.7	Her X-1                       
    255.8291 -37.9457    5.6  50.9  149.8   2.0013   2.1    9.6	4U 1700-377                   
    256.2326 -36.5529    7.9  49.7  148.9  -1.3456  -1.5   12.5	GX 349+2                      
    262.8749 -24.7042  437.2  41.3  134.5   0.0168   0.0    7.7	GX 1+4                        
    268.3923  -1.4291    2.0  29.2   98.1   1.9094   5.8    2.0	SW J1753.5-0127               
    263.0030 -33.8867   10.8  49.4  140.8   1.0971   1.1    3.2	GX 354-0                      
    240.3320  14.7985    2.8   3.9  -40.5   0.7885   4.1 ------	UNKNOWN                       
    243.7354  26.4257    2.9  15.2  -10.2   0.7488   4.0 ------	UNKNOWN                       
    
    Plot creation:
    Thu Oct  8 20:43:11 EDT 2015