batgrbproduct analysis for trigger=711914

batgrbproduct Analysis for Trigger=711914

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 Oct  6 15:25:31 EDT 2016
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger711914
======================================================================

  Trigger: 00711914      Segment: 000

  BAT Trigger Time: 495389280   [s; MET]
      Trigger Stop: 495389344   [s; MET]
               UTC: 2016-09-12T16:07:43.149340    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 301.518010297722   Dec: 57.543460509347  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.97
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    7.97

  Flight Position:   [ source = BAT ]
    RA: 301.518010297722   Dec: 57.543460509347  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 301.605851267266   Dec: 57.5638056226087  [deg; J2000]  
        { 20h 06m 25.4s , +57d 33' 49.7" }
         +/- 2.35821115181329 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.3558636778596 [arcmin] (formal 1-sigma fit error)
    SNR: 8.9301220804323
 
  Angular difference between Flight and Ground position is 3.079894 arcmin
 
  Partial Coding Fraction: 0.9609375    [ including projection effects ]

  Duration
     T90: 207.307999968529 +/- 16.0269435733524
        Measured from: -20.4480000138283
                   to: 186.8599999547     [s; relative to TRIGTIME]
     T50: 22.4359999895096 +/- 105.830444624765
        Measured from: 145.463999986649
                   to: 167.899999976158     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 148.56400001049     
                   to: 149.56400001049     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -33.1119999885559     
                   to: 211.087999999523     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.578017   2.179341   1.768317   0.481266
           0.106124   0.113153   0.105087   0.109793 [error]
 Peak      0.052537   0.071959   0.062680   0.022365
           0.007134   0.008209   0.007661   0.007259 [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 4.57e-07 8.74e-07 1.29e-06 4.13e-06 3.66e-06 6.74e-06   erg/cm2
              Error 4.76e-08 5.37e-08 1.04e-07 7.26e-07 2.49e-07 8.02e-07   erg/cm2
Peak flux Power-law 4.47e-01 5.16e-01 4.29e-01 6.00e-01 1.61e+00 1.99e+00   ph/cm2/s
              Error 9.08e-02 6.34e-02 6.24e-02 1.85e-01 1.82e-01 2.50e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.37e-07 8.96e-07 1.31e-06 2.74e-06 3.57e-06 5.37e-06   erg/cm2
              Error 5.73e-08 6.41e-08 1.09e-07 1.43e-06 2.90e-07 1.47e-06   erg/cm2
Peak flux Cutoff-PL 4.47e-01 5.17e-01 4.29e-01 5.96e-01 1.62e+00 2.00e+00   ph/cm2/s
              Error -------- -------- 6.25e-02 -------- 2.43e-01 2.73e-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    1.435    0.109    -      -           1.56e-03 9.35e-05   36.820 57
CPL   1.177    0.383     158.8  -43.4      2.10e-03 1.01e-03   35.710 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.268    0.204    -      -           1.36e-02 1.56e-03   53.260 57
CPL   1.262    0.281    9999.3    0.0      1.36e-02 1.09e-02   53.280 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: 58.944000 sec.
T50 in the 50-300 keV band: 22.912000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  244.200  -33.112  211.088
T90   207.308  -20.448  186.860
T50    22.436  145.464  167.900
Peak    1.000  148.564  149.564

Click here for the BAT GCN circular template

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

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
  301.6059    57.5638   0.0216    22.3794   -24.9060         1.4323674      8.930 TRIG_00711914                 
 
Foreground time interval of the image:
-15.099  73.301 (delta_t =  88.400 [sec])
Background time interval of the image:

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 64.000000

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 64.000000

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 64.000000

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  -33.112 sec. to  211.088 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.43457     ( -0.108447   0.108985 )
Norm@50keV  : 1.55989E-03    ( -9.3659e-05   9.33196e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          36.82 using 59 PHA bins.
# Reduced chi-squared =         0.6459 for     57 degrees of freedom 
# Null hypothesis probability =   9.825965e-01
 
Photon flux (15-150 keV)    in 244.2 sec: 0.191513 ( -0.011302  0.011314 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.65616e-06 ( -2.47643e-07  2.50229e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from  -33.112 sec. to  211.088 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.17698     ( -0.456159   0.309532 )
Epeak [keV] : 158.823      ( -72.0188 -158.823 )
Norm@50keV  : 2.10233E-03    ( -0.000609899   0.00141775 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          35.71 using 59 PHA bins.
# Reduced chi-squared =         0.6377 for     56 degrees of freedom 
# Null hypothesis probability =   9.841947e-01
 
Photon flux (15-150 keV)    in 244.2 sec: 0.188580 ( -0.012259  0.012221 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.56324e-06 ( -2.89494e-07  2.89726e-07 ) ergs/cm2

Band function

Time interval is from  -33.112 sec. to  211.088 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]    : 15.2088  (-1.15683  1.27608)
R^2/D10^2   : 2.04012E-02  (-0.00495224   0.00644293)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          91.02 using 59 PHA bins.
# Reduced chi-squared =          1.597 for     57 degrees of freedom 
# Null hypothesis probability =   2.809585e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.407e-07   2.977e-08
25- 50  9.685e-07   7.277e-08
50-150  1.534e-06   1.875e-07
15-150  2.743e-06   2.027e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-27.91      -200)
Norm        : 0.782996       (-0.0454631     0.0454631)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.87 using 59 PHA bins.
# Reduced chi-squared =         0.6819 for     57 degrees of freedom 
# Null hypothesis probability =   9.683606e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.762e-07   3.468e-08
25- 50  9.160e-07   7.497e-08
50-150  2.009e-06   4.165e-07
15-150  3.401e-06   4.737e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.01373        (-1.84285      1.9765)
R1^2/D10^2  : 0.175933        (-0.0933317      0.330114)
kT2 [keV]   : 25.7174        (-5.10188      9.85733)
R2^2/D10^2  : 2.72883E-03    (-0.00183836   0.00347271)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.98 using 59 PHA bins.
# Reduced chi-squared =         0.7088 for     55 degrees of freedom 
# Null hypothesis probability =   9.496925e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.156e-07   1.059e-07
25- 50  9.016e-07   1.808e-07
50-150  2.196e-06   7.558e-07
15-150  3.514e-06   8.433e-07

Peak spectrum fit

Power-law model

Time interval is from  148.564 sec. to  149.564 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26758     ( -0.204819   0.203968 )
Norm@50keV  : 1.35623E-02    ( -0.00156648   0.00155734 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.26 using 59 PHA bins.
# Reduced chi-squared =         0.9344 for     57 degrees of freedom 
# Null hypothesis probability =   6.160660e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.60876 ( -0.18182  0.1819 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.35126e-07 ( -1.82084e-08  1.84842e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from  148.564 sec. to  149.564 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26195     ( -0.355701   0.207032 )
Epeak [keV] : 9999.32      ( -9999.36 -9999.36 )
Norm@50keV  : 1.36241E-02    ( -0.013623   0.00825932 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          53.28 using 59 PHA bins.
# Reduced chi-squared =         0.9514 for     56 degrees of freedom 
# Null hypothesis probability =   5.784344e-01
 
Photon flux (15-150 keV)    in 1 sec: 1.61747 ( -0.25174  0.23395 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.49593e-08 ( 0  0 ) ergs/cm2

Band function

Time interval is from  148.564 sec. to  149.564 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]    : 15.8509  (-2.76868  3.6834)
R^2/D10^2   : 0.151156  (-0.0741223   0.136284)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          83.09 using 59 PHA bins.
# Reduced chi-squared =          1.458 for     57 degrees of freedom 
# Null hypothesis probability =   1.365270e-02
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.869e-09   1.991e-09
25- 50  3.285e-08   6.250e-09
50-150  5.747e-08   1.343e-08
15-150  9.819e-08   1.691e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (-41.7941      -200)
Norm        : 6.46608       (-0.742324     0.742324)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.33 using 59 PHA bins.
# Reduced chi-squared =          1.041 for     57 degrees of freedom 
# Null hypothesis probability =   3.907142e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.618e-08   9.130e-09
25- 50  3.113e-08   1.721e-08
50-150  6.828e-08   3.784e-08
15-150  1.156e-07   6.360e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 7.83308        (-1.86541      2.22879)
R1^2/D10^2  : 1.22689        (-0.690578      1.8495)
kT2 [keV]   : 49.9141        (-20.1322      -49.9188)
R2^2/D10^2  : 3.92791E-03    (-0.00363157   0.0124302)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          49.95 using 59 PHA bins.
# Reduced chi-squared =         0.9083 for     55 degrees of freedom 
# Null hypothesis probability =   6.673293e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.447e-08   4.482e-09
25- 50  3.032e-08   1.119e-08
50-150  9.982e-08   5.369e-08
15-150  1.446e-07   6.392e-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: 1.71694     ( -0.275367   0.292279 )
Norm@50keV  : 9.30551E-04    ( -0.000170037   0.000164581 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          39.03 using 59 PHA bins.
# Reduced chi-squared =         0.6848 for     57 degrees of freedom 
# Null hypothesis probability =   9.669039e-01
 
Photon flux (15-150 keV)    in 88.4 sec: 0.124328 ( -0.0185902  0.0185902 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.6067e-07 ( -1.42506e-07  1.4788e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.36076     ( -1.33063   0.928023 )
Epeak [keV] : 78.6647      ( -70.3917 -78.6667 )
Norm@50keV  : 1.47345E-03    ( -0.0014734   0.00670916 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          38.71 using 59 PHA bins.
# Reduced chi-squared =         0.6912 for     56 degrees of freedom 
# Null hypothesis probability =   9.621379e-01
 
Photon flux (15-150 keV)    in 88.4 sec: 0.122397 ( -0.019425  0.0193 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.30141e-07 ( -1.62432e-07  1.69206e-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)  = 8.74e-07
S(50-100 keV) = 1.29e-06

T90 vs. Hardness ratio plot

T90                                   = 207.307999968529 sec.
Hardness ratio (energy fluence ratio) = 1.47597

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.38106
Count Ratio (50-100 keV) / (15-25 keV) = 1.12059

Mask shadow pattern

IMX = 3.734577096126134E-01, IMY = 1.734012259417237E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000

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:

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

Time interval of the image:
-15.099400 73.300590
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.3165  35.4220   26.2  36.6 -104.0   0.1576   0.4    8.4	Her X-1                       
268.3344  -1.3854    4.6  46.8 -162.5  -0.8111  -2.5    4.5	SW J1753.5-0127               
273.9985 -14.1943   23.4  55.0 -177.1  -0.3734  -0.5    9.5	GX 17+2                       
288.6537  10.8431    4.9  26.3  176.9   0.4009   2.4   10.5	GRS 1915+105                  
299.6219  35.2040    0.6   0.1   81.4   2.9464  20.4    1.6	Cyg X-1                       
308.0537  41.1599    0.0   8.9   18.0  -0.0800  -0.5   12.7	Cyg X-3                       
326.1717  38.3224   15.1  21.5   46.0  -0.1291  -0.8    0.0	Cyg X-2                       
349.4214  29.1824    2.9  42.2   55.9   2.2970   4.0 ------	UNKNOWN                       
331.6195  64.4827    2.8  35.0   -4.3   0.7713   4.2 ------	UNKNOWN                       
301.6058  57.5638    1.3  22.4  -24.9   1.4319   8.9 ------	UNKNOWN                       
249.1229  41.8426    2.9  39.4  -92.5   2.3144   4.0 ------	UNKNOWN                       
249.4127  32.3497    2.5  41.3 -106.9   2.7992   4.7 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
117.900600 337.511500
361.000200 365.720000
421.000000 430.094900
482.000000 482.318100
541.000000 547.816500
601.000000 617.898700
776.000000 778.846500
780.000000 903.088400
920.000000 959.079600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
254.4901  35.3194   21.0  38.2 -142.1  -0.2501  -0.6    2.1	Her X-1                       
288.7467  10.8958    6.0  47.7  159.9   1.6248   1.9    4.3	GRS 1915+105                  
299.6146  35.2089    0.4  22.4  146.9   7.5943  26.6    1.3	Cyg X-1                       
308.3908  40.9608    0.0  17.2  125.0  -0.5698  -1.9   12.7	Cyg X-3                       
326.3085  38.3907   16.8  25.1   91.9   0.2761   0.7    7.7	Cyg X-2                       
318.3591  35.1321    2.8  25.1  108.8   1.4252   4.1 ------	UNKNOWN                       
 37.4954  52.3703    2.9  50.6   14.5   3.0252   4.1 ------	UNKNOWN                       
 12.6179  63.3848    3.4  33.7   12.6   1.1204   3.3 ------	UNKNOWN                       
301.5488  57.5503    0.6   0.0   34.2   4.5918  18.0 ------	UNKNOWN                       
275.0715  56.1138    2.1  14.5 -121.6   1.4588   5.6 ------	UNKNOWN                       
100.1020  63.8875    4.3  57.5  -26.2   4.7473   2.9 ------	UNKNOWN                       
100.2897  63.7649    4.1  57.6  -26.3   5.6368   3.5 ------	UNKNOWN

Plot creation:
Thu Oct  6 15:52:25 EDT 2016