batgrbproduct analysis for trigger=683076

batgrbproduct Analysis for Trigger=683076

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): Wed Jun  1 15:50:21 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger683076
======================================================================

  Trigger: 00683076      Segment: 000

  BAT Trigger Time: 482559837.184   [s; MET]
      Trigger Stop: 482559841.28   [s; MET]
               UTC: 2016-04-17T04:23:41.047080    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 120.239601231894   Dec: 7.67083182618275  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.19
     Image Trigger?:     NO
     Rate S/N Ratio:     12.2065556157337  [ if not an image trigger ]
     Image S/N Ratio:    7.19

  Flight Position:   [ source = BAT ]
    RA: 120.239601231894   Dec: 7.67083182618275  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 120.26119485532   Dec: 7.64577746435861  [deg; J2000]  
        { 08h 01m 02.7s , +07d 38' 44.8" }
         +/- 1.88489570359867 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.911537030679353 [arcmin] (formal 1-sigma fit error)
    SNR: 12.2984611493289
 
  Angular difference between Flight and Ground position is 1.977020 arcmin
 
  Partial Coding Fraction: 0.4140625    [ including projection effects ]

  Duration
     T90: 14.5519999265671 +/- 2.31705759617694
        Measured from: -1.18400001525879
                   to: 13.3679999113083     [s; relative to TRIGTIME]
     T50: 7.79599994421005 +/- 1.62308347734845
        Measured from: 1.87999999523163
                   to: 9.67599993944168     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 1.50799995660782     
                   to: 2.50799995660782     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.1360000371933     
                   to: 13.8880000114441     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.368036   0.357334   0.233119   0.082620
           0.039524   0.040964   0.035684   0.031376 [error]
 Peak      0.017645   0.051370   0.023814   0.016950
           0.010334   0.010756   0.009481   0.008364 [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 1.24e-07 1.75e-07 1.84e-07 3.59e-07 5.96e-07 8.43e-07   erg/cm2
              Error 2.32e-08 2.07e-08 3.65e-08 1.47e-07 8.24e-08 1.81e-07   erg/cm2
Peak flux Power-law 3.18e-01 3.20e-01 2.26e-01 2.54e-01 9.64e-01 1.12e+00   ph/cm2/s
              Error 1.57e-01 9.83e-02 7.74e-02 1.83e-01 2.79e-01 3.11e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.22e-07 1.67e-07 1.75e-07 3.97e-07 5.75e-07 8.59e-07   erg/cm2
              Error -------- 3.20e-08 3.24e-08 1.10e-07 1.09e-07 1.61e-07   erg/cm2
Peak flux Cutoff-PL 2.62e-01 3.48e-01 2.42e-01 9.56e-02 9.17e-01 9.57e-01   ph/cm2/s
              Error 2.39e-01 1.51e-01 9.37e-02 1.35e-01 3.72e-01 4.20e-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    1.926    0.237    -      -           4.05e-03 5.71e-04   66.510 57
CPL   2.524    0.552     187.4    0.0      2.05e-03 0.00e+00   65.320 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.499    0.500    -      -           7.72e-03 2.17e-03   54.010 57
CPL   0.595    3.076      77.4    0.0      2.20e-02 0.00e+00   53.800 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: 3.712000 sec.
T50 in the 50-300 keV band: 2.368000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   16.024   -2.136   13.888
T90    14.552   -1.184   13.368
T50     7.796    1.880    9.676
Peak    1.000    1.508    2.508

Click here for the BAT GCN circular template

Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minute to calcaulte

Image

Pre-slew 15.0-350.0 keV image (Event data)

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  120.2612     7.6458   0.0156    45.2450  -170.0471         1.0278794     12.298 TRIG_00683076                 
 
Foreground time interval of the image:
 -2.136  13.888 (delta_t =  16.024 [sec])
Background time interval of the image:
-71.683  -2.136 (delta_t =  69.547 [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 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)

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   -2.136 sec. to   13.888 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.92594     ( -0.230157   0.244537 )
Norm@50keV  : 4.04506E-03    ( -0.000581736   0.000560972 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.51 using 59 PHA bins.
# Reduced chi-squared =          1.167 for     57 degrees of freedom 
# Null hypothesis probability =   1.821165e-01
 
Photon flux (15-150 keV)    in 16.02 sec: 0.587045 ( -0.070793  0.07097 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.96091e-07 ( -8.1879e-08  8.29442e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -2.136 sec. to   13.888 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.52399     ( -0.880404   0.22335 )
Epeak [keV] : 187.437      (   )
Norm@50keV  : 2.04749E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.32 using 59 PHA bins.
# Reduced chi-squared =          1.166 for     56 degrees of freedom 
# Null hypothesis probability =   1.845287e-01
 
Photon flux (15-150 keV)    in 16.02 sec: 0.588747 ( -0.109808  0.07068 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.74887e-07 ( -1.31644e-07  8.58557e-08 ) ergs/cm2

Band function

Time interval is from   -2.136 sec. to   13.888 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.52429   ( 1.52504   1.52504 )
beta        : -1.92553    ( 1.92589   0.229774 )
Epeak [keV] : 14.4984      ( -14.2549 -14.2549 )
Norm@50keV   : 1.06178E-02    ( -0.0106746   19.3096 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.51 using 59 PHA bins.
# Reduced chi-squared =          1.209 for     55 degrees of freedom 
# Null hypothesis probability =   1.374510e-01
 
Photon flux (15-150 keV)    in 16.02 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]    : 10.7587  (-1.9299  2.39378)
R^2/D10^2   : 0.196132  (-0.102509   0.219132)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          98.35 using 59 PHA bins.
# Reduced chi-squared =          1.726 for     57 degrees of freedom 
# Null hypothesis probability =   5.523212e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.563e-08   1.889e-08
25- 50  2.078e-07   3.605e-08
50-150  1.335e-07   4.326e-08
15-150  4.169e-07   7.353e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 90.2396       (-32.3581      69.9158)
Norm        : 2.60291       (-0.451138     0.600828)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.62 using 59 PHA bins.
# Reduced chi-squared =          1.239 for     57 degrees of freedom 
# Null hypothesis probability =   1.061148e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.088e-07   1.964e-08
25- 50  1.841e-07   2.476e-08
50-150  2.809e-07   1.286e-07
15-150  5.738e-07   1.374e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 5.31489        (-1.57637      1.89175)
R1^2/D10^2  : 2.38895        (-1.63972      4.69163)
kT2 [keV]   : 24.9180        (-7.58878      20.5574)
R2^2/D10^2  : 6.98179E-03    (-0.00586382   0.0159288)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.68 using 59 PHA bins.
# Reduced chi-squared =          1.230 for     55 degrees of freedom 
# Null hypothesis probability =   1.172239e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.302e-07   6.245e-08
25- 50  1.579e-07   6.003e-08
50-150  3.201e-07   1.782e-07
15-150  6.082e-07   2.492e-07

Peak spectrum fit

Power-law model

Time interval is from    1.508 sec. to    2.508 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.49949     ( -0.494606   0.505545 )
Norm@50keV  : 7.72026E-03    ( -0.00217869   0.00215863 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.01 using 59 PHA bins.
# Reduced chi-squared =         0.9476 for     57 degrees of freedom 
# Null hypothesis probability =   5.878833e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.963683 ( -0.277415  0.279677 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.32538e-08 ( -2.19547e-08  2.23247e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    1.508 sec. to    2.508 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.595282     ( -0.556714   5.59504 )
Epeak [keV] : 77.3895      (   )
Norm@50keV  : 2.19550E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.80 using 59 PHA bins.
# Reduced chi-squared =         0.9607 for     56 degrees of freedom 
# Null hypothesis probability =   5.587196e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.916924 ( -0.437457  0.307486 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.74109e-08 ( -3.34609e-08  2.552e-08 ) ergs/cm2

Band function

Time interval is from    1.508 sec. to    2.508 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.83701   ( -4.83701   -4.83701 )
beta        : -2.60674    ( 2.60674   1.14246 )
Epeak [keV] : 47.1975      ( -47.1975 11.8116 )
Norm@50keV   : 15.8440    ( -4.31036   5.76248e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          52.79 using 59 PHA bins.
# Reduced chi-squared =         0.9598 for     55 degrees of freedom 
# Null hypothesis probability =   5.595019e-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]    : 14.1743  (-3.2867  5.08928)
R^2/D10^2   : 0.138822  (-0.0938245   0.220751)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.88 using 59 PHA bins.
# Reduced chi-squared =         0.9453 for     57 degrees of freedom 
# Null hypothesis probability =   5.926996e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.884e-09   3.500e-09
25- 50  2.215e-08   1.250e-08
50-150  2.949e-08   1.792e-08
15-150  5.753e-08   3.089e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.339       (-130.644      -199.354)
Norm        : 3.96626       (-1.0961     1.39963)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.94 using 59 PHA bins.
# Reduced chi-squared =         0.9463 for     57 degrees of freedom 
# Null hypothesis probability =   5.907337e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.877e-09   5.935e-09
25- 50  1.900e-08   1.137e-08
50-150  4.167e-08   2.419e-08
15-150  7.054e-08   4.203e-08

Double BB

------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 1.48518        (-1.32188      2.12097)
R1^2/D10^2  : 8919.09        (-11756.2      -11761.8)
kT2 [keV]   : 15.2128        (-3.70416      6.27903)
R2^2/D10^2  : 0.103031    (-0.0747132   0.112352)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          50.64 using 59 PHA bins.
#Fit statistic : Chi-Squared =          50.61 using 59 PHA bins.
# Reduced chi-squared =         0.9207 for     55 degrees of freedom 
# Reduced chi-squared =         0.9202 for     55 degrees of freedom 
# Null hypothesis probability =   6.418206e-01
# Null hypothesis probability =   6.427975e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.600e-09   4.293e-09
25- 50  2.010e-08   1.201e-08
50-150  3.153e-08   2.002e-08
15-150  6.123e-08   3.335e-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: 1.92594     ( -0.230157   0.244537 )
Norm@50keV  : 4.04506E-03    ( -0.000581736   0.000560972 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.51 using 59 PHA bins.
# Reduced chi-squared =          1.167 for     57 degrees of freedom 
# Null hypothesis probability =   1.821165e-01
 
Photon flux (15-150 keV)    in 16.02 sec: 0.587006 ( -0.0707849  0.0709621 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.95987e-07 ( -8.18603e-08  8.29522e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.70703     ( -1.06588   0.299152 )
Epeak [keV] : 237.185      (   )
Norm@50keV  : 1.70019E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.40 using 59 PHA bins.
# Reduced chi-squared =          1.168 for     56 degrees of freedom 
# Null hypothesis probability =   1.827828e-01
 
Photon flux (15-150 keV)    in 16.02 sec: 0.588797 ( -0.073676  0.069555 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.97341e-07 ( -8.29371e-08  3.9422e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.52429   ( 1.52504   1.52504 )
beta        : -1.92553    ( 1.92589   0.229774 )
Epeak [keV] : 14.4984      ( -14.2549 -14.2549 )
Norm@50keV   : 1.06178E-02    ( -0.0106746   10.6416 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          66.51 using 59 PHA bins.
# Reduced chi-squared =          1.209 for     55 degrees of freedom 
# Null hypothesis probability =   1.374510e-01
 
Photon flux (15-150 keV)    in 16.02 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)  = 1.75e-07
S(50-100 keV) = 1.84e-07

T90 vs. Hardness ratio plot

T90                                   = 14.5519999265671 sec.
Hardness ratio (energy fluence ratio) = 1.05143

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.970921
Count Ratio (50-100 keV) / (15-25 keV) = 0.633414

Mask shadow pattern

IMX = -9.934089672929708E-01, IMY = 1.743224831969709E-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:
-71.683400 -2.136000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
223.4573  76.7427    2.7  46.3  -27.3   0.7530   4.3 ------	UNKNOWN

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

Time interval of the image:
-2.136000 13.888000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
120.7385  -5.1950    2.2  55.4  179.7   1.1516   5.2 ------	UNKNOWN                       
234.1738  60.3469    2.6  50.7   -5.5   0.4562   4.4 ------	UNKNOWN                       
120.2612   7.6458    0.9  45.2 -170.0   1.0282  12.3 ------	UNKNOWN                       
123.6029  26.6266    2.5  29.8 -150.8   0.2615   4.6 ------	UNKNOWN                       
271.9332  84.3628    2.3  52.8  -38.0   1.0934   5.1 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
116.116590 962.949100
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6261  22.0069    0.5  38.0  -74.8  35.6558  22.3    0.6	Crab                          
135.4370 -40.5507    4.9  50.2  154.0   5.5388   2.4    4.2	Vela X-1                      
158.7697  43.3260    2.9  49.0   25.9   6.3620   4.1 ------	UNKNOWN                       
153.1254  28.6283    3.7  37.4   40.8   2.9240   3.2 ------	UNKNOWN                       
127.6787 -31.2411    3.1  39.6  159.0   3.3544   3.8 ------	UNKNOWN

Plot creation:
Wed Jun  1 17:50:27 EDT 2016