batgrbproduct analysis for trigger=259714

batgrbproduct Analysis for Trigger=259714

Analysis Summary

Notes:

1) No attempt has been made to eliminate the non-significant decimal places.
2) This batgrbproduct analysis is done using the HEASARC data.
3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Mon Jan 20 11:43:22 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger259714
======================================================================

  Trigger: 00259714      Segment: 000

  BAT Trigger Time: 192618636.032   [s; MET]
      Trigger Stop: 192618637.44   [s; MET]
               UTC: 2007-02-08T09:10:34.281260    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 197.920440046571   Dec: 61.9586566987151  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.29
     Image Trigger?:     NO
     Rate S/N Ratio:     10.0498756211209  [ if not an image trigger ]
     Image S/N Ratio:    7.29

  Flight Position:   [ source = BAT ]
    RA: 197.920440046571   Dec: 61.9586566987151  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 197.92   Dec: 61.9587  [deg; J2000]
        { 13h 11m 40.8s , +61d 57' 31.3" }
        +/- 3.12315411088 [arcmin] (estimated 90% radius based on SNR)
    SNR: 5.97878830649
 
 
  Angular difference between Flight and Ground position is 0.012681 arcmin
 
  Partial Coding Fraction: 0.5078125    [ including projection effects ]

  Duration
     T90: 64 +/- 22.6274169979695
        Measured from: -15.0320000052452
                   to: 48.9679999947548     [s; relative to TRIGTIME]
     T50: 48 +/- 16
        Measured from: -15.0320000052452
                   to: 32.9679999947548     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 40.4679999947548     
                   to: 41.4679999947548     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -15.0320000052452     
                   to: 48.9679999947548     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.298903   0.328131   0.256813   0.033002
           0.056884   0.059151   0.051824   0.045397 [error]
 Peak      0.015963   0.011216   0.017990   0.003709
           0.006936   0.007123   0.006438   0.005589 [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 1.12e-07 1.54e-07 1.58e-07 2.94e-07 5.18e-07 7.18e-07   erg/cm2
              Error 2.97e-08 2.88e-08 5.11e-08 1.92e-07 1.17e-07 2.47e-07   erg/cm2
Peak flux Power-law 9.12e-02 1.17e-01 1.10e-01 1.81e-01 3.78e-01 4.98e-01   ph/cm2/s
              Error 8.60e-02 9.12e-02 5.13e-02 2.38e-01 1.77e-01 2.26e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.07e-07 1.61e-07 1.60e-07 1.81e-07 5.09e-07 6.08e-07   erg/cm2
              Error 3.37e-08 3.56e-08 5.43e-08 2.55e-07 1.21e-07 2.83e-07   erg/cm2
Peak flux Cutoff-PL 9.43e-02 1.19e-01 1.09e-01 1.74e-01 3.81e-01 4.97e-01   ph/cm2/s
              Error 9.51e-02 7.65e-02 5.61e-02 2.37e-01 1.77e-01 2.54e-01   ph/cm2/s
 
Fluence        Band 1.02e-07 1.59e-07 1.67e-07 1.67e-07 5.16e-07 6.04e-07   erg/cm2
              Error -------- -------- -------- -------- 1.21e-07 2.36e-07   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    1.968    0.362    -      -           8.79e-04 2.07e-04   38.440 57
CPL   1.651    0.966      51.3   -1.2      1.30e-03 3.60e-03   38.220 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.094    0.920    -      -           3.26e-03 1.50e-03   50.280 57
CPL   1.090    1.288    9999.2    0.0      3.28e-03 5.81e-02   50.280 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: 9.408000 sec.
T50 in the 50-300 keV band: 5.312000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   64.000  -15.032   48.968
T90    64.000  -15.032   48.968
T50    48.000  -15.032   32.968
Peak    1.000   40.468   41.468

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
197.920 61.959 0.000 39.456 -27.329 0.078 5.979 TRIG_00259714
 
Image time interval: 0.000 to 1.408 [sec]

Lightcurves

Notes:

1) The mask-weighted light curves are using the flight position.
2) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
3) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
4) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
5) Time of each bin is in the middle of the bin.

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 1.408000

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 1.408000

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 1.408000

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:

1) The fitting includes the systematic errors.
2) When the burst includes telescope slew time periods, the fitting uses an average response file made from multiple 5-s response files through out the slew time plus single time preiod for the non-slew times, and weighted by the total counts in the corresponding time period using addrmf. An average response file is needed becuase a spectral fit using the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.

Time averaged spectrum fit using the average DRM

Power-law model

Time interval is from  -15.032 sec. to   48.968 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.96834     ( -0.340247   0.384601 )
Norm@50keV  : 8.79065E-04    ( -0.000212885   0.000201839 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.44 using 59 PHA bins.
# Reduced chi-squared =         0.6744 for     57 degrees of freedom 
# Null hypothesis probability =   9.718691e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.129976 ( -0.0241507  0.0241607 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.18073e-07 ( -1.15442e-07  1.18934e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -15.032 sec. to   48.968 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.65116     ( -1.40064   0.530835 )
Epeak [keV] : 51.2962      ( -48.7943 -51.2255 )
Norm@50keV  : 1.30386E-03    ( -0.0013074   0.00590025 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.22 using 59 PHA bins.
# Reduced chi-squared =         0.6826 for     56 degrees of freedom 
# Null hypothesis probability =   9.667414e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.128547 ( -0.024685  0.024635 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.08509e-07 ( -1.18492e-07  1.23647e-07 ) ergs/cm2

Band function

Time interval is from  -15.032 sec. to   48.968 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.60256   ( -2.76516   1.30598 )
beta        : -9.37009    ( 9.37145   19.3714 )
Epeak [keV] : 52.9331      ( -33.7655 -52.9529 )
Norm@50keV   : 1.37062E-03    ( -0.000562593   0.00582222 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.23 using 59 PHA bins.
# Reduced chi-squared =         0.6951 for     55 degrees of freedom 
# Null hypothesis probability =   9.584198e-01
 
Photon flux (15-150 keV)    in 64 sec: 0.128065 ( 6.87193  -0.02372 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.16285e-07 ( -5.15837e-07  -1.28152e-07 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.9323  (-2.98735  3.601)
R^2/D10^2   : 3.08157E-02  (-0.0188655   0.0581696)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.86 using 59 PHA bins.
# Reduced chi-squared =         0.8397 for     57 degrees of freedom 
# Null hypothesis probability =   8.003801e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.936e-08   2.643e-08
25- 50  1.856e-07   6.032e-08
50-150  1.583e-07   7.378e-08
15-150  4.032e-07   1.427e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 79.1092       (-34.9022      94.9888)
Norm        : 0.610398       (-0.151363     0.21109)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.48 using 59 PHA bins.
# Reduced chi-squared =         0.6750 for     57 degrees of freedom 
# Null hypothesis probability =   9.715908e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.013e-07   2.829e-08
25- 50  1.663e-07   5.456e-08
50-150  2.330e-07   1.588e-07
15-150  5.006e-07   1.869e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.50771        (-2.04254      2.34237)
R1^2/D10^2  : 2.92383        (-2.76113      11.1707)
kT2 [keV]   : 17.0563        (-4.7265      8.15532)
R2^2/D10^2  : 7.09255E-03    (-0.00560765   0.0181564)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.30 using 59 PHA bins.
# Reduced chi-squared =         0.6600 for     55 degrees of freedom 
# Null hypothesis probability =   9.757281e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.136e-07   6.334e-08
25- 50  1.404e-07   7.442e-08
50-150  2.480e-07   1.527e-07
15-150  5.020e-07   2.730e-07

Peak spectrum fit

Power-law model

Time interval is from   40.468 sec. to   41.468 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.09404     ( -1.01655   0.822778 )
Norm@50keV  : 3.26414E-03    ( -0.00156786   0.00144146 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.28 using 59 PHA bins.
# Reduced chi-squared =         0.8821 for     57 degrees of freedom 
# Null hypothesis probability =   7.233181e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.378426 ( -0.175747  0.178925 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.41927e-08 ( -1.54935e-08  1.56882e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   40.468 sec. to   41.468 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08958     ( -1.74924   0.82592 )
Epeak [keV] : 9999.25      ( -9999.3 -9999.3 )
Norm@50keV  : 3.28212E-03    ( -0.00156792   0.114646 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.28 using 59 PHA bins.
# Reduced chi-squared =         0.8979 for     56 degrees of freedom 
# Null hypothesis probability =   6.901041e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.380799 ( -0.177961  0.175843 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.41761e-08 ( -1.54705e-08  1.56008e-08 ) ergs/cm2

Band function

Time interval is from   40.468 sec. to   41.468 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.767567   ( 0.767694   0.767694 )
beta        : -1.11230    ( 1.10293   1.02041 )
Epeak [keV] : 94.2585      ( -90.2819 -90.2819 )
Norm@50keV   : 5.77410E-03    ( -0.00582802   206078 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.26 using 59 PHA bins.
# Reduced chi-squared =         0.9139 for     55 degrees of freedom 
# Null hypothesis probability =   6.559188e-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]    : 23.7521  (-11.8987  53.7132)
R^2/D10^2   : 9.99377E-03  (-0.00994241   0.0857918)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.97 using 59 PHA bins.
# Reduced chi-squared =         0.9117 for     57 degrees of freedom 
# Null hypothesis probability =   6.639351e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.006e-09   6.900e-10
25- 50  5.554e-09   3.660e-09
50-150  2.336e-08   1.574e-08
15-150  2.992e-08   2.035e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.362       (-199.363      -199.363)
Norm        : 1.60820       (-0.721754     0.721779)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          51.35 using 59 PHA bins.
# Reduced chi-squared =         0.9008 for     57 degrees of freedom 
# Null hypothesis probability =   6.861766e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.005e-09   2.663e-09
25- 50  7.703e-09   5.240e-09
50-150  1.690e-08   1.131e-08
15-150  2.860e-08   1.867e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.06898        (-6.07495      79.7157)
R1^2/D10^2  : 0.652512        (-0.650891      -0.650891)
kT2 [keV]   : 37.5882        (-37.5993      -37.5993)
R2^2/D10^2  : 2.24934E-03    (-0.00224722   0.0343804)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.00 using 59 PHA bins.
# Reduced chi-squared =         0.9091 for     55 degrees of freedom 
# Null hypothesis probability =   6.656140e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.674e-09   2.736e-09
25- 50  6.186e-09   3.719e-09
50-150  2.565e-08   1.718e-08
15-150  3.551e-08   1.912e-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: 2.24480     ( -0.619873   0.846457 )
Norm@50keV  : 5.53974E-04    ( -0.000285325   0.000261278 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.82 using 59 PHA bins.
# Reduced chi-squared =         0.6811 for     57 degrees of freedom 
# Null hypothesis probability =   9.687287e-01
 
Photon flux (15-150 keV)    in 42.9 sec: 9.39273E-02 ( -0.0297005  0.0297046 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24957e-07 ( -8.94002e-08  9.6431e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.97109     (     )
Epeak [keV] : 4.82594      (   )
Norm@50keV  : 7.84953E-04    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.87 using 59 PHA bins.
# Reduced chi-squared =         0.6941 for     56 degrees of freedom 
# Null hypothesis probability =   9.605240e-01
 
Photon flux (15-150 keV)    in 42.9 sec: 9.39004E-02 ( -0.0298131  0.0296216 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24955e-07 ( -9.29296e-08  9.66202e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -3.52914   ( 3.52914   3.52914 )
beta        : -2.24480    ( -0.846589   0.620047 )
Epeak [keV] : 5.83059      ( -5.83059 -5.83059 )
Norm@50keV   : 7.52929E-02    ( -0.038794   0.0355113 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.82 using 59 PHA bins.
# Reduced chi-squared =         0.7059 for     55 degrees of freedom 
# Null hypothesis probability =   9.516348e-01
 
Photon flux (15-150 keV)    in 42.9 sec: 9.37561E-02 (    ) 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)  = 1.54e-07
S(50-100 keV) = 1.58e-07

T90 vs. Hardness ratio plot

T90                                   = 64 sec.
Hardness ratio (energy fluence ratio) = 1.02597

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.09778
Count Ratio (50-100 keV) / (15-25 keV) = 0.859185

Mask shadow pattern

IMX = 0.731177215682, IMY = 0.377855168207

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.408000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.408000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.408000

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:
-239.032000 -15.032000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6300  22.0117    0.7  50.3 -161.7   7.5872  17.2    0.2	Crab                          
114.9921   5.7993    2.0  42.1  151.2   2.0492   5.7 ------	UNKNOWN                       
103.3975  14.5042    2.4  41.4  172.8   1.3911   4.8 ------	UNKNOWN                       
 80.3697  12.2662    2.5  58.9 -168.5   4.6613   4.7 ------	UNKNOWN                       
187.1259  63.7221    2.4  34.9  -31.5   1.0983   4.9 ------	UNKNOWN

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

Time interval of the image:
-15.032000 27.868600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6798  22.1449   15.2  50.2 -161.6  -0.1170  -0.8    8.2	Crab                          
126.7399  -2.5471    2.2  45.9  131.2   1.4527   5.2 ------	UNKNOWN                       
197.8975  61.9381    2.2  39.4  -27.3   0.5095   5.2 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
98.868600 603.018000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4504  35.4696   10.7  43.7  -56.1   3.6213   1.1    7.6	Her X-1                       
160.6103  32.6442    2.5  37.7   80.2  11.8307   4.6 ------	UNKNOWN                       
180.0529  63.5187    2.9   8.3  132.6   3.5089   4.0 ------	UNKNOWN                       
164.9911  69.4096    2.8  15.2  157.0   3.5680   4.1 ------	UNKNOWN                       
228.0072  30.5205    2.6  37.0  -22.2   5.3369   4.5 ------	UNKNOWN

Plot creation:
Thu Nov 12 13:27:28 EST 2015