batgrbproduct analysis for trigger=770981

batgrbproduct Analysis for Trigger=770981

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): Thu Sep 28 17:39:39 EDT 2017
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger770981
======================================================================

  Trigger: 00770981      Segment: 000

  BAT Trigger Time: 526375597.248   [s; MET]
      Trigger Stop: 526375598.272   [s; MET]
               UTC: 2017-09-06T07:26:17.605220    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 128.703619534125   Dec: 70.7817005714058  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.09
     Image Trigger?:     NO
     Rate S/N Ratio:     21.1187120819429  [ if not an image trigger ]
     Image S/N Ratio:    11.09

  Flight Position:   [ source = BAT ]
    RA: 128.703619534125   Dec: 70.7817005714058  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 128.669502283292   Dec: 70.804276145787  [deg; J2000]  
        { 08h 34m 40.7s , +70d 48' 15.4" }
         +/- 0.751874977030309 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.215075986987955 [arcmin] (formal 1-sigma fit error)
    SNR: 45.7144177058612
 
  Angular difference between Flight and Ground position is 1.512707 arcmin
 
  Partial Coding Fraction: 0.328125    [ including projection effects ]

  Duration
     T90: 45.0759999752045 +/- 4.80024419382997
        Measured from: -25.7840000391006
                   to: 19.2919999361038     [s; relative to TRIGTIME]
     T50: 12.6159999370575 +/- 0.9888012956279
        Measured from: -3.28000003099442
                   to: 9.33599990606308     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 6.17599999904633     
                   to: 7.17599999904633     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -35.2080000042915     
                   to: 41.3279999494553     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     3.639321   5.061694   3.903203   0.866434
           0.109002   0.116378   0.102086   0.079517 [error]
 Peak      0.143948   0.287148   0.324975   0.096604
           0.016096   0.018423   0.018808   0.013174 [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 1.45e-06 2.40e-06 3.02e-06 7.57e-06 8.96e-06 1.45e-05   erg/cm2
              Error 7.92e-08 7.71e-08 1.06e-07 5.89e-07 2.61e-07 6.51e-07   erg/cm2
Peak flux Power-law 4.19e-04 4.24e-03 4.65e-02 4.95e+00 2.07e-01 3.76e+00   ph/cm2/s
              Error 4.42e-05 -------- -------- 4.48e-01 -------- --------   ph/cm2/s
 
Fluence   Cutoff-PL 1.32e-06 2.46e-06 3.12e-06 4.73e-06 8.80e-06 1.16e-05   erg/cm2
              Error 1.02e-07 8.48e-08 1.22e-07 1.17e-06 2.83e-07 1.20e-06   erg/cm2
Peak flux Cutoff-PL 1.49e+00 2.37e+00 2.25e+00 1.66e+00 7.05e+00 7.77e+00   ph/cm2/s
              Error 2.90e-01 2.04e-01 1.93e-01 5.90e-01 5.07e-01 7.74e-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    1.669    0.052    -      -           1.26e-02 3.58e-04   58.460 57
CPL   1.277    0.220     101.2   36.5      1.91e-02 4.41e-03   48.440 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.160    0.106    -      -           6.19e-02 4.08e-03   63.000 57
CPL   0.358    0.488     118.8   52.2      1.41e-01 7.18e-02   53.460 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: 43.200000 sec.
T50 in the 50-300 keV band: 11.328000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   76.536  -35.208   41.328
T90    45.076  -25.784   19.292
T50    12.616   -3.280    9.336
Peak    1.000    6.176    7.176

Click here for the BAT GCN circular template

Special notes of this burst

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
  128.6695    70.8043   0.0042    45.3602   -30.6633        13.7827072     45.714 TRIG_00770981                 
 
Foreground time interval of the image:
-35.208  41.328 (delta_t =  76.536 [sec])
Background time interval of the image:
-239.248 -35.208 (delta_t = 204.040 [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 1.024000

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 1.024000

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 1.024000

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  -35.208 sec. to   41.328 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.66934     ( -0.0517362   0.051889 )
Norm@50keV  : 1.26452E-02    ( -0.000358263   0.000358212 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.46 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     57 degrees of freedom 
# Null hypothesis probability =   4.213783e-01
 
Photon flux (15-150 keV)    in 76.54 sec: 1.66191 ( -0.05345  0.05365 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.98603e-06 ( -2.60965e-07  2.61136e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -35.208 sec. to   41.328 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.27732     ( -0.22513   0.214759 )
Epeak [keV] : 101.244      ( -18.4256 54.6152 )
Norm@50keV  : 1.91453E-02    ( -0.00380462   0.00501101 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.44 using 59 PHA bins.
# Reduced chi-squared =         0.8649 for     56 degrees of freedom 
# Null hypothesis probability =   7.536400e-01
 
Photon flux (15-150 keV)    in 76.54 sec: 1.61335 ( -0.05867  0.05902 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.78901e-06 ( -2.83735e-07  2.82684e-07 ) ergs/cm2

Band function

Time interval is from  -35.208 sec. to   41.328 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 15.6666  (  )
R^2/D10^2   : 0.150799  (   )
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =         292.04 using 59 PHA bins.
# Reduced chi-squared =         5.1236 for     57 degrees of freedom 
# Null hypothesis probability =   2.729770e-33
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.884e-07   3.387e-08
25- 50  2.431e-06   9.338e-08
50-150  4.137e-06   2.047e-07
15-150  7.156e-06   2.227e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 161.798       (-20.6323      26.2281)
Norm        : 6.71168       (-0.242072     0.256754)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.49 using 59 PHA bins.
# Reduced chi-squared =         0.8508 for     57 degrees of freedom 
# Null hypothesis probability =   7.814071e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.307e-06   7.195e-08
25- 50  2.450e-06   1.401e-07
50-150  4.999e-06   1.171e-06
15-150  8.755e-06   1.248e-06

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.17727        (-0.817329      0.878693)
R1^2/D10^2  : 1.55164        (-0.500363      0.843479)
kT2 [keV]   : 24.7432        (-2.20552      2.9025)
R2^2/D10^2  : 2.25212E-02    (-0.00794188   0.0101753)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.25 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     55 degrees of freedom 
# Null hypothesis probability =   3.915673e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.192e-06   1.198e-07
25- 50  2.488e-06   1.558e-07
50-150  4.992e-06   3.716e-07
15-150  8.672e-06   5.243e-07

Peak spectrum fit

Power-law model

Time interval is from    6.176 sec. to    7.176 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.16034     ( -0.106408   0.105368 )
Norm@50keV  : 6.18777E-02    ( -0.00408334   0.0040795 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.00 using 59 PHA bins.
# Reduced chi-squared =          1.105 for     57 degrees of freedom 
# Null hypothesis probability =   2.723710e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.206518 (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.35097e-07 ( -4.39847e-08  4.41066e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    6.176 sec. to    7.176 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.358233     ( -0.515808   0.459799 )
Epeak [keV] : 118.837      ( -25.5438 78.9416 )
Norm@50keV  : 0.140621    ( -0.0516324   0.0919689 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.46 using 59 PHA bins.
# Reduced chi-squared =         0.9547 for     56 degrees of freedom 
# Null hypothesis probability =   5.715000e-01
 
Photon flux (15-150 keV)    in 1 sec: 7.04655 ( -0.50669  0.50757 ) ph/cm2/s
Energy fluence (15-150 keV)             : 6.2273e-07 ( -4.57643e-08  4.56139e-08 ) ergs/cm2

Band function

Time interval is from    6.176 sec. to    7.176 sec.
 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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]    : 20.4153  (-1.53225  1.69947)
R^2/D10^2   : 0.329325  (-0.0770115   0.0976427)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          77.51 using 59 PHA bins.
# Reduced chi-squared =          1.360 for     57 degrees of freedom 
# Null hypothesis probability =   3.672314e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.624e-08   3.490e-09
25- 50  1.325e-07   1.250e-08
50-150  4.104e-07   4.290e-08
15-150  5.691e-07   4.475e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-10.6268      -200)
Norm        : 30.3622       (-2.0436     2.0436)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          97.37 using 59 PHA bins.
# Reduced chi-squared =          1.708 for     57 degrees of freedom 
# Null hypothesis probability =   6.928930e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.563e-08   6.200e-09
25- 50  1.455e-07   1.425e-08
50-150  3.191e-07   7.320e-08
15-150  5.402e-07   8.305e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.58295        (-2.87911      3.79045)
R1^2/D10^2  : 2.42793        (-1.47326      6.28552)
kT2 [keV]   : 28.2654        (-4.85777      11.6127)
R2^2/D10^2  : 9.30770E-02    (-0.0671202   0.0967235)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.46 using 59 PHA bins.
# Reduced chi-squared =         0.9719 for     55 degrees of freedom 
# Null hypothesis probability =   5.337734e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.597e-08   1.827e-08
25- 50  1.393e-07   4.141e-08
50-150  4.399e-07   1.656e-07
15-150  6.252e-07   2.042e-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: 1.66934     ( -0.0517362   0.051889 )
Norm@50keV  : 1.26452E-02    ( -0.000358263   0.000358212 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.46 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     57 degrees of freedom 
# Null hypothesis probability =   4.213783e-01
 
Photon flux (15-150 keV)    in 76.54 sec: 1.66184 ( -0.0534368  0.0536469 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.9848e-06 ( -2.60975e-07  2.61159e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.27732     ( -0.22513   0.214759 )
Epeak [keV] : 101.244      ( -18.4256 54.6152 )
Norm@50keV  : 1.91453E-02    ( -0.00380462   0.00501101 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          48.44 using 59 PHA bins.
# Reduced chi-squared =         0.8649 for     56 degrees of freedom 
# Null hypothesis probability =   7.536400e-01
 
Photon flux (15-150 keV)    in 76.54 sec: 1.61312 ( -0.05864  0.05899 ) ph/cm2/s
Energy fluence (15-150 keV)             : 8.792e-06 ( -2.84346e-07  2.82968e-07 ) ergs/cm2

Band function

 
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       :    (     )
beta        :     (     )
Epeak [keV] :       (   )
Norm@50keV   :     (     )
------------------------------------------------------------
 
Photon flux (15-150 keV)    in  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)  = 2.40e-06
S(50-100 keV) = 3.02e-06

T90 vs. Hardness ratio plot

T90                                   = 45.0759999752045 sec.
Hardness ratio (energy fluence ratio) = 1.25833

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.39083
Count Ratio (50-100 keV) / (15-25 keV) = 1.07251

Mask shadow pattern

IMX = 8.710630366018427E-01, IMY = 5.164456075814051E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 1.024000

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:
-239.248000 -35.208000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4698  35.3272    2.4  22.4  165.1   0.9219   4.8    1.1	Her X-1                       
299.5224  35.0938    4.2  39.1   96.1   2.0312   2.8    7.3	Cyg X-1                       
308.1799  40.9780    2.7  39.3   81.8   3.2110   4.3    3.5	Cyg X-3                       
221.5535   5.7530    2.5  56.7 -151.8   5.7325   4.7 ------	UNKNOWN

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

Time interval of the image:
-35.208000 41.328000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3937  35.5020    4.5  22.2  165.2  -0.4084  -2.6   10.1	Her X-1                       
299.6085  35.2255    9.4  39.0   95.9  -0.6214  -1.2    1.7	Cyg X-1                       
308.1596  40.7907    4.3  39.4   82.1  -1.3126  -2.7   10.0	Cyg X-3                       
259.0263   5.2927    3.5  52.7  162.4   1.8205   3.3 ------	UNKNOWN                       
338.9313  69.5454    2.4  37.1   27.7   1.0129   4.9 ------	UNKNOWN                       
250.3813   1.8227    2.7  55.8  173.2   2.8158   4.2 ------	UNKNOWN                       
235.1430   2.5728    2.5  56.4 -168.5   2.8026   4.6 ------	UNKNOWN                       
128.6695  70.8043    0.3  45.4  -30.7  13.7818  45.7 ------	UNKNOWN                       
117.9956  66.5739    2.3  51.0  -29.6   2.3563   5.1 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
391.852590 839.438700
840.752000 962.867400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
268.3451  -1.3277   13.1  43.3  -57.9  -1.3640  -0.9    7.6	SW J1753.5-0127               
273.9882 -14.1343    8.2  36.2  -76.8   1.5888   1.4    6.0	GX 17+2                       
276.0250 -30.3248   37.9  37.9 -103.9   0.3295   0.3    5.8	H1820-303                     
285.0360 -24.9205   42.1  28.4 -101.0  -0.1641  -0.3    0.0	HT1900.1-2455                 
288.8015  10.9204    1.3  30.9  -23.7   4.3730   8.8    1.5	GRS 1915+105                  
299.6062  35.2099    2.9  47.1    9.9   3.1219   4.0    0.9	Cyg X-1                       
308.2264  40.9854    4.6  51.7   19.9   4.5647   2.5    5.6	Cyg X-3                       
266.0122  -0.4798    3.0  45.8  -57.6   8.6500   3.9 ------	UNKNOWN

Plot creation:
Fri Sep 29 00:58:36 EDT 2017