batgrbproduct analysis for trigger=592204

batgrbproduct Analysis for Trigger=592204

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): Sun Oct  5 00:14:21 EDT 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger592204
======================================================================

  Trigger: 00592204      Segment: 000

  BAT Trigger Time: 416794159.744   [s; MET]
      Trigger Stop: 416794171.904   [s; MET]
               UTC: 2014-03-18T00:09:07.971300    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 184.052783456915   Dec: 20.2074317487921  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    8.5
     Image Trigger?:     NO
     Rate S/N Ratio:     12.2474487139159  [ if not an image trigger ]
     Image S/N Ratio:    8.5

  Flight Position:   [ source = BAT ]
    RA: 184.052783456915   Dec: 20.2074317487921  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 184.050018980769   Dec: 20.22515773557  [deg; J2000]  
        { 12h 16m 12.0s , +20d 13' 30.6" }
         +/- 2.11435441791349 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.673116130558229 [arcmin] (formal 1-sigma fit error)
    SNR: 10.4370720975466
 
  Angular difference between Flight and Ground position is 1.074888 arcmin
 
  Partial Coding Fraction: 0.4921875    [ including projection effects ]

  Duration
     T90: 7.6039999127388 +/- 1.27603289493624
        Measured from: 3.52799999713898
                   to: 11.1319999098778     [s; relative to TRIGTIME]
     T50: 4.75599992275238 +/- 1.66540924222543
        Measured from: 4.31599998474121
                   to: 9.07199990749359     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 5.47999995946884     
                   to: 6.47999995946884     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: 2.24399995803833     
                   to: 11.6759999990463     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.095076   0.164878   0.127145   0.059662
           0.023456   0.022982   0.020265   0.017444 [error]
 Peak      0.007259   0.037596   0.016701   0.012189
           0.007720   0.007383   0.006556   0.005666 [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 3.23e-08 6.52e-08 1.03e-07 3.57e-07 2.85e-07 5.57e-07   erg/cm2
              Error 9.26e-09 1.12e-08 1.99e-08 1.55e-07 4.93e-08 1.68e-07   erg/cm2
Peak flux Power-law 1.20e-01 1.61e-01 1.61e-01 2.89e-01 5.36e-01 7.31e-01   ph/cm2/s
              Error 7.93e-02 6.66e-02 5.10e-02 2.06e-01 1.75e-01 2.33e-01   ph/cm2/s
 
Fluence   Cutoff-PL 3.08e-08 6.69e-08 1.05e-07 2.40e-07 2.80e-07 4.42e-07   erg/cm2
              Error 1.07e-08 1.31e-08 2.17e-08 1.97e-07 5.42e-08 2.38e-07   erg/cm2
Peak flux Cutoff-PL 1.12e-01 1.68e-01 1.68e-01 1.88e-01 5.31e-01 6.31e-01   ph/cm2/s
              Error 8.47e-02 7.57e-02 5.94e-02 1.86e-01 1.76e-01 2.86e-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    1.346    0.278    -      -           3.09e-03 4.83e-04   54.960 57
CPL   1.086    1.408     180.8    0.0      4.16e-03 6.87e-03   54.780 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.009    0.559    -      -           4.66e-03 1.49e-03   87.560 57
CPL   0.619    1.016     187.7    0.0      7.21e-03 8.16e-02   87.440 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: 8.384000 sec.
T50 in the 50-300 keV band: 5.376000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100    9.432    2.244   11.676
T90     7.604    3.528   11.132
T50     4.756    4.316    9.072
Peak    1.000    5.480    6.480

Click here for the BAT GCN circular template

Image

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

#   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
  184.0500    20.2252   0.0184    28.4810   125.5736         0.4459840     10.437 TRIG_00592204                 
 
Foreground time interval of the image:
  2.244  11.676 (delta_t =   9.432 [sec])
Background time interval of the image:
-239.744   2.244 (delta_t = 241.988 [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 12.160000

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 12.160000

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 12.160000

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)

The mask-weighted light curves based on cleaned DPHs

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    2.244 sec. to   11.676 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.34592     ( -0.279583   0.275889 )
Norm@50keV  : 3.09471E-03    ( -0.00048326   0.000482605 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.96 using 59 PHA bins.
# Reduced chi-squared =         0.9642 for     57 degrees of freedom 
# Null hypothesis probability =   5.519712e-01
 
Photon flux (15-150 keV)    in 9.432 sec: 0.372512 ( -0.0598418  0.060068 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.85347e-07 ( -4.89791e-08  4.96445e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    2.244 sec. to   11.676 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08584     ( -1.23954   1.57593 )
Epeak [keV] : 180.841      ( -180.868 -180.868 )
Norm@50keV  : 4.16066E-03    ( -0.00151764   0.0122224 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.78 using 59 PHA bins.
# Reduced chi-squared =         0.9782 for     56 degrees of freedom 
# Null hypothesis probability =   5.211698e-01
 
Photon flux (15-150 keV)    in 9.432 sec: 0.367990 ( -0.062592  0.062479 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.7977e-07 ( -5.4948e-08  5.34898e-08 ) ergs/cm2

Band function

Time interval is from    2.244 sec. to   11.676 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.15580   ( -4.48025   -4.48025 )
beta        : -1.52488    ( -0.401036   0.352094 )
Epeak [keV] : 40.7365      ( -46.2755 57.7162 )
Norm@50keV   : 0.127710    ( -0.129551   38.5598 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.07 using 59 PHA bins.
# Reduced chi-squared =         0.9831 for     55 degrees of freedom 
# Null hypothesis probability =   5.100968e-01
 
Photon flux (15-150 keV)    in 9.432 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]    : 16.6738  (-3.31681  4.32439)
R^2/D10^2   : 2.98190E-02  (-0.0161774   0.0342882)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.45 using 59 PHA bins.
# Reduced chi-squared =          1.113 for     57 degrees of freedom 
# Null hypothesis probability =   2.596931e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.601e-08   5.340e-09
25- 50  6.973e-08   1.992e-08
50-150  1.375e-07   4.243e-08
15-150  2.233e-07   5.810e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 1.54597       (-0.241777     0.241754)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.30 using 59 PHA bins.
# Reduced chi-squared =         0.9877 for     57 degrees of freedom 
# Null hypothesis probability =   5.014124e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.631e-08   2.092e-08
25- 50  6.985e-08   3.923e-08
50-150  1.532e-07   8.531e-08
15-150  2.594e-07   1.472e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 8.01170        (-3.05423      4.88153)
R1^2/D10^2  : 0.235453        (-0.175818      0.374159)
kT2 [keV]   : 31.4851        (-11.986      -31.6715)
R2^2/D10^2  : 2.75382E-03    (-0.00270183   0.00746913)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.01 using 59 PHA bins.
# Reduced chi-squared =         0.9820 for     55 degrees of freedom 
# Null hypothesis probability =   5.124188e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.971e-08   1.758e-08
25- 50  6.986e-08   3.857e-08
50-150  1.806e-07   1.019e-07
15-150  2.801e-07   1.448e-07

Peak spectrum fit

Power-law model

Time interval is from    5.480 sec. to    6.480 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.00886     ( -0.604807   0.514144 )
Norm@50keV  : 4.65914E-03    ( -0.0015134   0.00146615 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          87.56 using 59 PHA bins.
# Reduced chi-squared =          1.536 for     57 degrees of freedom 
# Null hypothesis probability =   5.733856e-03
 
Photon flux (15-150 keV)    in 1 sec: 0.535533 ( -0.172249  0.177499 ) ph/cm2/s
Energy fluence (15-150 keV)             : 5.02238e-08 ( -1.58007e-08  1.59888e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    5.480 sec. to    6.480 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.619272     ( -2.666   -0.634507 )
Epeak [keV] : 187.722      ( -192.874 -192.874 )
Norm@50keV  : 7.20588E-03    ( -0.00384588   0.159319 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          87.44 using 59 PHA bins.
# Reduced chi-squared =          1.561 for     56 degrees of freedom 
# Null hypothesis probability =   4.564631e-03
 
Photon flux (15-150 keV)    in 1 sec: 0.530709 ( -0.174074  0.17864 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.89721e-08 ( -1.8294e-08  1.69038e-08 ) ergs/cm2

Band function

Time interval is from    5.480 sec. to    6.480 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 4.95747   ( -4.95747   -4.95747 )
beta        : -1.48445    ( -1.21353   0.773161 )
Epeak [keV] : 38.0813      ( -38.0813 38.4237 )
Norm@50keV   : 32.7530    ( -9.51484   833511 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          84.98 using 59 PHA bins.
# Reduced chi-squared =          1.545 for     55 degrees of freedom 
# Null hypothesis probability =   5.853914e-03
 
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]    : 19.4271  (-7.58471  16.9033)
R^2/D10^2   : 2.79783E-02  (-0.027665   0.120033)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          89.52 using 59 PHA bins.
# Reduced chi-squared =          1.571 for     57 degrees of freedom 
# Null hypothesis probability =   3.841080e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.059e-09   1.326e-09
25- 50  1.005e-08   6.285e-09
50-150  2.801e-08   1.820e-08
15-150  4.012e-08   2.421e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-99.6773      -199.363)
Norm        : 2.29245       (-0.728923     0.728922)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          90.28 using 59 PHA bins.
# Reduced chi-squared =          1.584 for     57 degrees of freedom 
# Null hypothesis probability =   3.280977e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.708e-09   3.622e-09
25- 50  1.098e-08   6.605e-09
50-150  2.408e-08   1.479e-08
15-150  4.077e-08   2.571e-08

Double BB

------------------------------------------------------------
#Fit statistic : Chi-Squared =          89.52 using 59 PHA bins.
#Fit statistic : Chi-Squared =          85.27 using 59 PHA bins.
#Fit statistic : Chi-Squared =          85.25 using 59 PHA bins.
#Fit statistic : Chi-Squared =          85.21 using 59 PHA bins.
# Reduced chi-squared =          1.628 for     55 degrees of freedom 
# Reduced chi-squared =          1.550 for     55 degrees of freedom 
# Reduced chi-squared =          1.550 for     55 degrees of freedom 
# Reduced chi-squared =          1.549 for     55 degrees of freedom 
# Null hypothesis probability =   2.249944e-03
# Null hypothesis probability =   5.518267e-03
# Null hypothesis probability =   5.540766e-03
# Null hypothesis probability =   5.583155e-03
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  0.000e+00   0.000e+00
25- 50  0.000e+00   0.000e+00
50-150  0.000e+00   0.000e+00
15-150  0.000e+00   0.000e+00

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: 1.34592     ( -0.279583   0.275889 )
Norm@50keV  : 3.09471E-03    ( -0.00048326   0.000482605 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.96 using 59 PHA bins.
# Reduced chi-squared =         0.9642 for     57 degrees of freedom 
# Null hypothesis probability =   5.519712e-01
 
Photon flux (15-150 keV)    in 9.432 sec: 0.372512 ( -0.0598418  0.060068 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.85347e-07 ( -4.89791e-08  4.96445e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08584     ( -1.23954   1.57593 )
Epeak [keV] : 180.841      ( -180.868 -180.868 )
Norm@50keV  : 4.16066E-03    ( -0.00151764   0.0122224 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.78 using 59 PHA bins.
# Reduced chi-squared =         0.9782 for     56 degrees of freedom 
# Null hypothesis probability =   5.211698e-01
 
Photon flux (15-150 keV)    in 9.432 sec: 0.367990 ( -0.062592  0.062479 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.7977e-07 ( -5.4948e-08  5.34898e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.15580   ( -4.48025   -4.48025 )
beta        : -1.52488    ( -0.401036   0.352094 )
Epeak [keV] : 40.7365      ( -46.2755 57.7162 )
Norm@50keV   : 0.127710    ( -0.129551   38.5532 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.07 using 59 PHA bins.
# Reduced chi-squared =         0.9831 for     55 degrees of freedom 
# Null hypothesis probability =   5.100968e-01
 
Photon flux (15-150 keV)    in 9.432 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)  = 6.52e-08
S(50-100 keV) = 1.03e-07

T90 vs. Hardness ratio plot

T90                                   = 7.6039999127388 sec.
Hardness ratio (energy fluence ratio) = 1.57975

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.73417
Count Ratio (50-100 keV) / (15-25 keV) = 1.3373

Mask shadow pattern

IMX = -3.156132590397236E-01, IMY = -4.412741659074138E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 12.160000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 12.160000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 12.160000

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:
-239.744000 2.244000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
244.9761 -15.6424    0.3  50.4   -0.1  19.1982  38.7    0.2	Sco X-1                       
254.6136  35.4387   21.7  35.9  -77.2   0.3152   0.5    9.6	Her X-1                       
168.5806  15.7407    2.5  43.9  126.0   3.5909   4.5 ------	UNKNOWN

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

Time interval of the image:
2.244000 11.676000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
245.0505 -15.5720    7.4  50.4   -0.2  -0.1150  -1.6    5.8	Sco X-1                       
254.3658  35.2148    6.8  35.6  -76.8   0.1058   1.7    8.9	Her X-1                       
214.5084 -15.0494    2.1  40.2   39.3   0.3433   5.5 ------	UNKNOWN                       
184.0500  20.2252    1.1  28.5  125.6   0.4460  10.4 ------	UNKNOWN                       
148.8855  65.8535    2.3  57.3 -167.1   0.6685   5.1 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
113.356600 303.756630
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
149.1948  -7.0848    2.7  43.8  126.0   2.7197   4.3 ------	UNKNOWN                       
177.0434  17.8846    2.6   7.0  142.8   0.5963   4.4 ------	UNKNOWN                       
203.7684  10.1449    2.8  21.5    6.1   0.5617   4.2 ------	UNKNOWN                       
122.0316  25.7163    3.7  56.9  179.2   3.0381   3.2 ------	UNKNOWN                       
119.7489  30.1534    4.1  58.3 -175.3   2.7915   2.8 ------	UNKNOWN                       
119.2978  32.6269    2.7  58.5 -172.4   4.1924   4.3 ------	UNKNOWN

Plot creation:
Sat May 30 14:01:43 EDT 2015