batgrbproduct analysis for trigger=634795

batgrbproduct Analysis for Trigger=634795

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 Apr  6 02:55:09 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger634795
======================================================================

  Trigger: 00634795      Segment: 000

  BAT Trigger Time: 448001706.176   [s; MET]
      Trigger Stop: 448001707.2   [s; MET]
               UTC: 2015-03-14T04:54:52.869200    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 126.658741157189   Dec: 63.8332935465329  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    25.72
     Image Trigger?:     NO
     Rate S/N Ratio:     255.998046867549  [ if not an image trigger ]
     Image S/N Ratio:    25.72

  Flight Position:   [ source = BAT ]
    RA: 126.658741157189   Dec: 63.8332935465329  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 126.660328236612   Dec: 63.8392124312441  [deg; J2000]  
        { 08h 26m 38.5s , +63d 50' 21.2" }
         +/- 0.588461499483061 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.190676162657658 [arcmin] (formal 1-sigma fit error)
    SNR: 64.8772732461773
 
  Angular difference between Flight and Ground position is 0.357607 arcmin
 
  Partial Coding Fraction: 0.34375    [ including projection effects ]

  Duration
     T90: 14.7799999713898 +/- 2.6292173945121
        Measured from: -1.22000002861023
                   to: 13.5599999427795     [s; relative to TRIGTIME]
     T50: 5.35599994659424 +/- 0.149452374785769
        Measured from: 0.339999973773956
                   to: 5.69599992036819     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.0600000023841858     
                   to: 1.06000000238419     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -2.17199999094009     
                   to: 101.439999997616     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     5.501021   9.974694  10.769670   3.854653
           0.089221   0.105096   0.105065   0.080690 [error]
 Peak      0.667681   1.508879   1.920925   0.711183
           0.022507   0.031847   0.036945   0.027325 [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 1.84e-06 4.38e-06 8.30e-06 3.82e-05 2.25e-05 5.27e-05   erg/cm2
              Error 6.59e-08 9.30e-08 1.26e-07 1.40e-06 3.34e-07 1.42e-06   erg/cm2
Peak flux Power-law 7.40e+00 1.10e+01 1.22e+01 2.57e+01 3.85e+01 5.64e+01   ph/cm2/s
              Error 3.82e-01 3.48e-01 3.01e-01 1.38e+00 9.35e-01 1.52e+00   ph/cm2/s
 
Fluence   Cutoff-PL 1.82e-06 4.39e-06 8.34e-06 3.61e-05 2.25e-05 5.06e-05   erg/cm2
              Error 8.78e-08 9.21e-08 1.37e-07 3.55e-06 3.37e-07 3.19e-06   erg/cm2
Peak flux Cutoff-PL 6.58e+00 1.11e+01 1.29e+01 1.84e+01 3.80e+01 4.90e+01   ph/cm2/s
              Error 5.03e-01 3.66e-01 4.11e-01 2.70e+00 9.54e-01 2.84e+00   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    1.078    0.028    -      -           2.06e-02 3.32e-04   32.230 57
CPL   1.073    0.000    9998.9    0.0      2.07e-02 1.74e-03   32.110 56
 
The chi2 of BB fit is -------- 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    0.847    0.041    -      -           3.35e-01 8.21e-03   53.530 57
CPL   0.465    0.175     248.9  102.2      4.82e-01 7.87e-02   38.500 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: 10.752000 sec.
T50 in the 50-300 keV band: 4.352000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  103.612   -2.172  101.440
T90    14.780   -1.220   13.560
T50     5.356    0.340    5.696
Peak    1.000    0.060    1.060

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
  126.6603    63.8392   0.0030    35.0548   -64.9043        29.0996946     64.877 TRIG_00634795                 
 
Foreground time interval of the image:
 -2.172  15.525 (delta_t =  17.697 [sec])
Background time interval of the image:
-239.176  -2.172 (delta_t = 237.004 [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

8 ms binning

From T100_start-3 s to T100_start+3 s

2 ms binning

From T100_start-1 s to T100_start+1 s

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   -2.172 sec. to  101.440 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07828     ( -0.0281125   0.0279837 )
Norm@50keV  : 2.06042E-02    ( -0.000332682   0.00033145 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.23 using 59 PHA bins.
# Reduced chi-squared =         0.5655 for     57 degrees of freedom 
# Null hypothesis probability =   9.966844e-01
 
Photon flux (15-150 keV)    in 103.6 sec: 2.38518 ( -0.0411166  0.0412168 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24749e-05 ( -3.3427e-07  3.34261e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -2.172 sec. to  101.440 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.07278     (     )
Epeak [keV] : 9998.88      ( -9998.59 -9998.59 )
Norm@50keV  : 2.07300E-02    ( -0.000317191   0.0031535 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.11 using 59 PHA bins.
# Reduced chi-squared =         0.5734 for     56 degrees of freedom 
# Null hypothesis probability =   9.957035e-01
 
Photon flux (15-150 keV)    in 103.6 sec: 2.37776 ( -0.03874  0.04431 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.24639e-05 ( -3.35975e-07  3.37736e-07 ) ergs/cm2

Band function

Time interval is from   -2.172 sec. to  101.440 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99960   ( -4.9996   -4.9996 )
beta        : -1.08643    ( -0.0286595   0.0286576 )
Epeak [keV] : 25.1923      ( -25.1923 3.14992 )
Norm@50keV   : 1381.15    ( -20.2498   3.44227e+06 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          30.81 using 59 PHA bins.
# Reduced chi-squared =         0.5602 for     55 degrees of freedom 
# Null hypothesis probability =   9.965900e-01
 
Photon flux (15-150 keV)    in 103.6 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]    : 24.5544  (  )
R^2/D10^2   : 5.82789E-02  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         798.65 using 59 PHA bins.
# Reduced chi-squared =         14.011 for     57 degrees of freedom 
# Null hypothesis probability =  2.419109e-131
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.384e-07   2.155e-08
25- 50  3.588e-06   8.599e-08
50-150  1.608e-05   3.367e-07
15-150  2.031e-05   3.367e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 10.6584       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =        1007.36 using 59 PHA bins.
# Reduced chi-squared =        17.6730 for     57 degrees of freedom 
# Null hypothesis probability =  6.753687e-174
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.750e-06   4.869e-08
25- 50  5.289e-06   9.428e-08
50-150  1.160e-05   1.968e-07
15-150  1.964e-05   3.263e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.34028        (-0.627082      0.668611)
R1^2/D10^2  : 0.726035        (-0.138589      0.179441)
kT2 [keV]   : 39.5114        (-2.45929      3.03785)
R2^2/D10^2  : 1.12818E-02    (-0.00230742   0.00254826)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.07 using 59 PHA bins.
# Reduced chi-squared =         0.6559 for     55 degrees of freedom 
# Null hypothesis probability =   9.773103e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.538e-06   9.997e-08
25- 50  4.541e-06   1.368e-07
50-150  1.645e-05   4.766e-07
15-150  2.253e-05   6.371e-07

Peak spectrum fit

Power-law model

Time interval is from    0.060 sec. to    1.060 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.846801     ( -0.0413497   0.0411057 )
Norm@50keV  : 0.334976    ( -0.00821476   0.00819899 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.53 using 59 PHA bins.
# Reduced chi-squared =         0.9392 for     57 degrees of freedom 
# Null hypothesis probability =   6.059628e-01
 
Photon flux (15-150 keV)    in 1 sec: 38.4541 ( -0.935161  0.935771 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.83956e-06 ( -9.72411e-08  9.73064e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.060 sec. to    1.060 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.465417     ( -0.178015   0.171315 )
Epeak [keV] : 248.872      ( -59.1433 145.341 )
Norm@50keV  : 0.482085    ( -0.0710644   0.086255 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.50 using 59 PHA bins.
# Reduced chi-squared =         0.6874 for     56 degrees of freedom 
# Null hypothesis probability =   9.642188e-01
 
Photon flux (15-150 keV)    in 1 sec: 37.9881 ( -0.9538  0.9546 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.81e-06 ( 0  0 ) ergs/cm2

Band function

Time interval is from    0.060 sec. to    1.060 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99996   ( -4.99996   -4.99996 )
beta        : -0.846896    ( -0.0410913   0.0413919 )
Epeak [keV] : 16.4277      ( -16.4277 9983.23 )
Norm@50keV   : 2.22676E+05    ( -5220.71   3.57396e+07 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.51 using 59 PHA bins.
# Reduced chi-squared =         0.9730 for     55 degrees of freedom 
# Null hypothesis probability =   5.316200e-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]    : 25.1805  (  )
R^2/D10^2   : 0.965117  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         236.57 using 59 PHA bins.
# Reduced chi-squared =         4.1503 for     57 degrees of freedom 
# Null hypothesis probability =   9.775957e-24
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.059e-07   4.950e-09
25- 50  6.030e-07   2.190e-08
50-150  2.832e-06   9.800e-08
15-150  3.541e-06   1.000e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (      )
Norm        : 151.976       (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =         810.78 using 59 PHA bins.
# Reduced chi-squared =         14.224 for     57 degrees of freedom 
# Null hypothesis probability =  8.489909e-134
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.784e-07   1.005e-08
25- 50  7.280e-07   1.880e-08
50-150  1.597e-06   4.050e-08
15-150  2.703e-06   6.850e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 10.3258        (-1.35462      1.5362)
R1^2/D10^2  : 6.75873        (-1.95083      3.07416)
kT2 [keV]   : 39.9182        (-4.2546      6.59291)
R2^2/D10^2  : 0.205473    (-0.0766678   0.0886038)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.99 using 59 PHA bins.
# Reduced chi-squared =         0.6726 for     55 degrees of freedom 
# Null hypothesis probability =   9.703100e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.906e-07   1.990e-08
25- 50  6.739e-07   5.120e-08
50-150  2.971e-06   2.075e-07
15-150  3.835e-06   3.145e-07

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: 1.04464     ( -0.0258772   0.025759 )
Norm@50keV  : 0.115690    ( -0.0017582   0.00175395 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          32.28 using 59 PHA bins.
# Reduced chi-squared =         0.5663 for     57 degrees of freedom 
# Null hypothesis probability =   9.966197e-01
 
Photon flux (15-150 keV)    in 17.7 sec: 13.3565 ( -0.214266  0.214662 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.18029e-05 ( -3.03066e-07  3.0316e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.940240     ( -0.106438   0.104041 )
Epeak [keV] : 666.972      ( -299.453 -666.973 )
Norm@50keV  : 0.126868    ( -0.00580113   0.0122048 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          29.38 using 59 PHA bins.
# Reduced chi-squared =         0.5246 for     56 degrees of freedom 
# Null hypothesis probability =   9.987247e-01
 
Photon flux (15-150 keV)    in 17.7 sec: 13.2677 ( -0.2296  0.2304 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.1776e-05 ( 0  0 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.99992   ( -0.00192019   -4.99992 )
beta        : -1.05659    ( -0.0265678   0.0265845 )
Epeak [keV] : 26.7477      ( -5.34182 2.84003 )
Norm@50keV   : 5277.09    ( -72.404   14875.8 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          28.02 using 59 PHA bins.
# Reduced chi-squared =         0.5095 for     55 degrees of freedom 
# Null hypothesis probability =   9.990746e-01
 
Photon flux (15-150 keV)    in 17.7 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)  = 4.38e-06
S(50-100 keV) = 8.30e-06

T90 vs. Hardness ratio plot

T90                                   = 14.7799999713898 sec.
Hardness ratio (energy fluence ratio) = 1.89498

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.81324
Count Ratio (50-100 keV) / (15-25 keV) = 1.95776

Mask shadow pattern

IMX = 2.975847422032998E-01, IMY = 6.353989954791968E-01

TIME vs. PHA plot around the trigger time

TIME vs. DetID plot around the trigger time

100 us light curve (15-350 keV)

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:
-239.176000 -2.172000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
140.3165 -17.2656    3.0  53.2  155.9   3.9626   3.9 ------	UNKNOWN                       
162.9921   8.8144    2.7  25.8  121.0   1.0289   4.3 ------	UNKNOWN                       
172.6158  42.8240    2.2  15.9    7.5   0.9297   5.3 ------	UNKNOWN                       
110.4016  69.6649    3.0  43.7  -63.9   3.6594   3.8 ------	UNKNOWN                       
101.9049  30.6092    2.4  45.3 -121.3   4.1935   4.9 ------	UNKNOWN

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

Time interval of the image:
-2.172000 15.524600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
138.4329 -14.6954    3.9  51.3  159.1   1.6703   3.0 ------	UNKNOWN                       
151.8799   4.0749    4.4  29.9  145.3   0.5955   2.6 ------	UNKNOWN                       
227.3525  56.6642    3.5  52.4   -1.7   1.7287   3.3 ------	UNKNOWN                       
176.2825  54.8326    3.6  25.4  -15.0   0.6562   3.2 ------	UNKNOWN                       
126.6603  63.8392    0.2  35.1  -64.9  29.0980  64.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
74.324600 781.324600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 83.6708  21.9969    3.1  50.6 -163.6   4.0475   3.7    2.3	Crab                          
203.2919  50.2452    2.9  40.9   33.0   2.9656   4.0 ------	UNKNOWN                       
155.1360  55.5176    2.9  16.4   68.5   1.6118   4.0 ------	UNKNOWN                       
234.0262  51.2055    2.8  51.9   10.8   5.0147   4.1 ------	UNKNOWN                       
122.6235  58.0828    3.4   6.1  162.3   1.2530   3.4 ------	UNKNOWN                       
 22.0155  81.6367    2.8  29.4  -55.3   2.0740   4.1 ------	UNKNOWN                       
 64.0596  28.8830    4.3  52.4 -139.4   7.3418   2.7 ------	UNKNOWN                       
 54.6306  42.1881    3.5  45.3 -121.2   6.7671   3.3 ------	UNKNOWN

Plot creation:
Thu May 28 13:09:50 EDT 2015