batgrbproduct analysis for trigger=547407

batgrbproduct Analysis for Trigger=547407

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 Jan 12 05:50:27 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger547407
======================================================================

  Trigger: 00547407      Segment: 000

  BAT Trigger Time: 381333392.192   [s; MET]
      Trigger Stop: 381333393.216   [s; MET]
               UTC: 2013-01-31T13:56:22.028180    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 171.108082478216   Dec: 48.0695104914022  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    9.89
     Image Trigger?:     NO
     Rate S/N Ratio:     13.228756555323  [ if not an image trigger ]
     Image S/N Ratio:    9.89

  Flight Position:   [ source = BAT ]
    RA: 171.108082478216   Dec: 48.0695104914022  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 171.092733997921   Dec: 48.075575385707  [deg; J2000]  
        { 11h 24m 22.3s , +48d 04' 32.1" }
         +/- 2.20501738668926 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.00971025974905 [arcmin] (formal 1-sigma fit error)
    SNR: 9.8294627789625
 
  Angular difference between Flight and Ground position is 0.714887 arcmin
 
  Partial Coding Fraction: 0.9765625    [ including projection effects ]

  Duration
     T90: 51.5239999294281 +/- 2.51219424154756
        Measured from: -0.295999944210052
                   to: 51.227999985218     [s; relative to TRIGTIME]
     T50: 45.4199999570847 +/- 2.64419366495476
        Measured from: 1.14000004529953
                   to: 46.5600000023842     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -0.0399999618530273     
                   to: 0.960000038146973     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -0.951999962329865     
                   to: 52.0680000185966     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.267691   0.235574   0.121162   0.014423
           0.034899   0.035785   0.030948   0.026430 [error]
 Peak      0.027968   0.046365   0.018981   0.004544
           0.005168   0.005349   0.004660   0.003706 [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 7.63e-08 9.56e-08 8.71e-08 1.38e-07 3.06e-07 3.97e-07   erg/cm2
              Error 1.54e-08 1.59e-08 2.74e-08 8.38e-08 6.26e-08 1.18e-07   erg/cm2
Peak flux Power-law 2.92e-01 2.48e-01 1.44e-01 1.25e-01 7.39e-01 8.10e-01   ph/cm2/s
              Error 6.24e-02 3.97e-02 3.41e-02 5.40e-02 1.18e-01 1.34e-01   ph/cm2/s
 
Fluence   Cutoff-PL 7.37e-08 1.03e-07 8.23e-08 4.55e-08 2.87e-07 3.05e-07   erg/cm2
              Error 1.67e-08 2.18e-08 3.23e-08 1.10e-07 6.89e-08 1.40e-07   erg/cm2
Peak flux Cutoff-PL 2.22e-01 3.43e-01 1.33e-01 7.00e-03 7.05e-01 7.05e-01   ph/cm2/s
              Error 7.32e-02 6.03e-02 4.76e-02 1.40e-02 1.15e-01 1.16e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- 4.60e-08 -------- 3.05e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.24e-01 3.42e-01 1.34e-01 7.54e-03 7.07e-01 7.07e-01   ph/cm2/s
              Error 5.52e-02 5.99e-02 -------- -------- 1.15e-01 --------   ph/cm2/s

 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.134    0.318    -      -           6.20e-04 1.42e-04   47.360 57
CPL   1.513    1.096      30.8   -1.5      1.47e-03 7.04e-03   46.620 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.782    0.250    -      -           5.40e-03 1.01e-03   72.940 57
CPL  -1.226    1.796      43.8    7.5      3.00e-01 2.56e+00   57.920 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: 3.904000 sec.
T50 in the 50-300 keV band: 1.472000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   53.020   -0.952   52.068
T90    51.524   -0.296   51.228
T50    45.420    1.140   46.560
Peak    1.000   -0.040    0.960

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
  171.0927    48.0756   0.0196     9.7529   -87.2823         0.3914883      9.829 TRIG_00547407                 
 
Foreground time interval of the image:
 -0.952  18.509 (delta_t =  19.461 [sec])
Background time interval of the image:
-239.192  -0.952 (delta_t = 238.240 [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)

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   -0.952 sec. to   52.068 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 2.13423     ( -0.299325   0.337227 )
Norm@50keV  : 6.19532E-04    ( -0.000144508   0.000139676 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          47.36 using 59 PHA bins.
# Reduced chi-squared =         0.8309 for     57 degrees of freedom 
# Null hypothesis probability =   8.149168e-01
 
Photon flux (15-150 keV)    in 53.02 sec: 9.91479E-02 ( -0.0154326  0.0154361 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.06281e-07 ( -6.11676e-08  6.41123e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.952 sec. to   52.068 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.51280     ( -1.59229   0.600015 )
Epeak [keV] : 30.7586      ( -27.8022 -30.7586 )
Norm@50keV  : 1.46861E-03    ( -0.00146861   0.0126103 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.62 using 59 PHA bins.
# Reduced chi-squared =         0.8325 for     56 degrees of freedom 
# Null hypothesis probability =   8.099081e-01
 
Photon flux (15-150 keV)    in 53.02 sec: 9.72958E-02 ( -0.0156961  0.0157962 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.87323e-07 ( -6.43345e-08  7.3526e-08 ) ergs/cm2

Band function

Time interval is from   -0.952 sec. to   52.068 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.51291   ( -6.20285   1.64402 )
beta        : -10.0000    ( 10   7.10543e-15 )
Epeak [keV] : 30.7518      ( -12.5166 -30.7518 )
Norm@50keV   : 1.46812E-03    ( -0.000875025   0.0126251 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.62 using 59 PHA bins.
# Reduced chi-squared =         0.8476 for     55 degrees of freedom 
# Null hypothesis probability =   7.821263e-01
 
Photon flux (15-150 keV)    in 53.02 sec: 9.79647E-02 (    ) 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]    : 8.84307  (-1.56735  1.87695)
R^2/D10^2   : 7.38204E-02  (-0.0386791   0.0831372)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          54.17 using 59 PHA bins.
# Reduced chi-squared =         0.9504 for     57 degrees of freedom 
# Null hypothesis probability =   5.818436e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  5.903e-08   1.783e-08
25- 50  1.220e-07   3.343e-08
50-150  4.411e-08   1.924e-08
15-150  2.252e-07   5.397e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 51.6311       (-18.5141      36.5808)
Norm        : 0.554931       (-0.13084     0.190251)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.69 using 59 PHA bins.
# Reduced chi-squared =         0.8191 for     57 degrees of freedom 
# Null hypothesis probability =   8.333401e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.246e-08   1.421e-08
25- 50  1.052e-07   2.290e-08
50-150  1.053e-07   5.357e-08
15-150  2.830e-07   6.699e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 4.32615        (-3.79107      3.07689)
R1^2/D10^2  : 0.766586        (-0.647859      1.69631)
kT2 [keV]   : 13.9442        (-5.25219      15.0217)
R2^2/D10^2  : 9.53751E-03    (-0.00909072   0.0689446)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          46.89 using 59 PHA bins.
# Reduced chi-squared =         0.8526 for     55 degrees of freedom 
# Null hypothesis probability =   7.733615e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.414e-08   3.921e-08
25- 50  1.009e-07   5.230e-08
50-150  9.880e-08   6.113e-08
15-150  2.739e-07   1.443e-07

Peak spectrum fit

Power-law model

Time interval is from   -0.040 sec. to    0.960 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.78177     ( -0.242834   0.257282 )
Norm@50keV  : 5.40075E-03    ( -0.00101626   0.00100086 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          72.94 using 59 PHA bins.
# Reduced chi-squared =          1.280 for     57 degrees of freedom 
# Null hypothesis probability =   7.578158e-02
 
Photon flux (15-150 keV)    in 1 sec: 0.739010 ( -0.118225  0.118229 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.97393e-08 ( -9.40503e-09  9.69938e-09 ) ergs/cm2

Cutoff power-law model

Time interval is from   -0.040 sec. to    0.960 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: -1.22618     ( -2.07843   1.51431 )
Epeak [keV] : 43.8333      ( -6.17183 8.80327 )
Norm@50keV  : 0.299523    ( -0.314835   4.80755 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.92 using 59 PHA bins.
# Reduced chi-squared =          1.034 for     56 degrees of freedom 
# Null hypothesis probability =   4.042426e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.705215 ( -0.114904  0.115973 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.16002e-08 ( -7.7739e-09  8.7444e-09 ) ergs/cm2

Band function

Time interval is from   -0.040 sec. to    0.960 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 1.15144   ( -1.40896   2.17749 )
beta        : -9.37167    ( 9.37167   19.3701 )
Epeak [keV] : 44.3219      ( -6.68671 8.30919 )
Norm@50keV   : 0.269055    ( -0.26861   60.5622 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.92 using 59 PHA bins.
# Reduced chi-squared =          1.053 for     55 degrees of freedom 
# Null hypothesis probability =   3.679080e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.707174 ( 6.29283  -0.116365 ) ph/cm2/s
Energy fluence (15-150 keV)             : 4.16225e-08 ( -4.16155e-08  -7.4555e-09 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 11.1890  (-1.51832  1.74781)
R^2/D10^2   : 0.261078  (-0.109502   0.184599)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.01 using 59 PHA bins.
# Reduced chi-squared =          1.018 for     57 degrees of freedom 
# Null hypothesis probability =   4.378726e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.851e-09   1.895e-09
25- 50  1.980e-08   4.080e-09
50-150  1.418e-08   5.225e-09
15-150  4.083e-08   9.210e-09

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 83.2642       (-30.1958      66.3257)
Norm        : 3.54165       (-0.673649     0.839153)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.13 using 59 PHA bins.
# Reduced chi-squared =          1.178 for     57 degrees of freedom 
# Null hypothesis probability =   1.686319e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.211e-09   1.991e-09
25- 50  1.531e-08   3.060e-09
50-150  2.219e-08   1.321e-08
15-150  4.671e-08   1.547e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.68920        (-6.66343      193.336)
R1^2/D10^2  : 0.254687        (-0.254744      -0.254744)
kT2 [keV]   : 11.9932        (-11.9692      -11.9692)
R2^2/D10^2  : 0.179489    (-0.181952   0.257383)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.87 using 59 PHA bins.
# Reduced chi-squared =          1.052 for     55 degrees of freedom 
# Null hypothesis probability =   3.698316e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  7.202e-09   1.294e-08
25- 50  1.935e-08   7.870e-08
50-150  1.515e-08   6.235e-08
15-150  4.171e-08   7.425e-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: 1.94523     ( -0.296542   0.324895 )
Norm@50keV  : 1.05505E-03    ( -0.000233564   0.000225567 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          44.66 using 59 PHA bins.
# Reduced chi-squared =         0.7835 for     57 degrees of freedom 
# Null hypothesis probability =   8.825736e-01
 
Photon flux (15-150 keV)    in 19.46 sec: 0.154402 ( -0.0254563  0.0254587 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.88915e-07 ( -3.90792e-08  4.07631e-08 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.32332     ( -1.61992   0.913004 )
Epeak [keV] : 43.1942      (   )
Norm@50keV  : 2.49478E-03    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.95 using 59 PHA bins.
# Reduced chi-squared =         0.7848 for     56 degrees of freedom 
# Null hypothesis probability =   8.786409e-01
 
Photon flux (15-150 keV)    in 19.46 sec: 0.151469 ( -0.025348  0.026034 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.75617e-07 ( -4.25197e-08  4.82567e-08 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 0.176828   ( -0.251137   -0.251137 )
beta        : -2.17069    ( 2.18349   0.466649 )
Epeak [keV] : 28.8777      ( -28.8724 119.899 )
Norm@50keV   : 3.36482E-02    ( -0.0432627   100.716 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          43.54 using 59 PHA bins.
# Reduced chi-squared =         0.7916 for     55 degrees of freedom 
# Null hypothesis probability =   8.675479e-01
 
Photon flux (15-150 keV)    in 19.46 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.76907e-07 ( 0  0 ) ergs/cm2

S(25-50 keV) vs. S(50-100 keV) plot

S(25-50 keV)  = 9.56e-08
S(50-100 keV) = 8.71e-08

T90 vs. Hardness ratio plot

T90                                   = 51.5239999294281 sec.
Hardness ratio (energy fluence ratio) = 0.911088

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 0.880022
Count Ratio (50-100 keV) / (15-25 keV) = 0.452619

Mask shadow pattern

IMX = 8.149817189806598E-03, IMY = 1.716909899493872E-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:
-239.192000 -0.952000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
185.0483  -8.2768    3.6  55.7   11.0   3.3969   3.3 ------	UNKNOWN                       
 73.6947  55.5627    2.7  54.2  177.7   2.7114   4.2 ------	UNKNOWN                       
216.6938  22.9125    4.6  50.7  -44.4   2.3094   2.5 ------	UNKNOWN

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

Time interval of the image:
-0.952000 18.508600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
155.1234  13.9292    2.6  28.8   51.1   0.2601   4.5 ------	UNKNOWN                       
104.5524  43.4678    2.4  39.6  152.7   0.3765   4.9 ------	UNKNOWN                       
155.6504  49.1195    2.7   7.2 -159.9   0.1672   4.3 ------	UNKNOWN                       
171.0926  48.0756    1.2   9.8  -87.3   0.3914   9.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
47.908600 839.499400
840.808000 962.855400
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
 70.2698  65.6083    2.5  51.3 -178.1   5.7645   4.6 ------	UNKNOWN                       
182.6281  39.4763    2.6  11.9  -15.1   1.8662   4.5 ------	UNKNOWN                       
225.2557  21.1789    5.1  50.7  -44.5   6.5008   2.4 ------	UNKNOWN                       
224.8690  18.9567    3.0  52.0  -42.2  10.2280   3.8 ------	UNKNOWN                       
225.4821  21.0833    4.5  50.9  -44.6   8.6974   3.0 ------	UNKNOWN

Plot creation:
Sat May 30 17:30:57 EDT 2015