batgrbproduct Analysis for Trigger=319584

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Sun Jan 19 23:21:37 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger319584
======================================================================

  Trigger: 00319584      Segment: 000

  BAT Trigger Time: 240066615.296   [s; MET]
      Trigger Stop: 240066616.32   [s; MET]
               UTC: 2008-08-10T13:10:12.287980    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 356.779571156542   Dec: 0.319715625427062  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    7.59
     Image Trigger?:     NO
     Rate S/N Ratio:     14.7309198626562  [ if not an image trigger ]
     Image S/N Ratio:    7.59

  Flight Position:   [ source = BAT ]
    RA: 356.779571156542   Dec: 0.319715625427062  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 356.78300404361   Dec: 0.312256406462367  [deg; J2000]  
        { 23h 47m 07.9s , +00d 18' 44.1" }
         +/- 1.1690293015403 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.594737582105186 [arcmin] (formal 1-sigma fit error)
    SNR: 24.3346416899719
 
  Angular difference between Flight and Ground position is 0.492674 arcmin
 
  Partial Coding Fraction: 0.6875    [ including projection effects ]

  Duration
     T90: 107.668000012636 +/- 3.47154376061863
        Measured from: -6.22400000691414
                   to: 101.444000005722     [s; relative to TRIGTIME]
     T50: 38.9480000138283 +/- 2.52967428011403
        Measured from: 10.447999984026
                   to: 49.3959999978542     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 24.6800000071526     
                   to: 25.6800000071526     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -20.4959999918938     
                   to: 106.491999983788     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.844654   2.445282   2.153071   0.800968
           0.065791   0.069537   0.063197   0.058147 [error]
 Peak      0.063743   0.087361   0.076435   0.027669
           0.006959   0.007607   0.007309   0.006267 [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 4.80e-07 1.02e-06 1.68e-06 6.34e-06 4.64e-06 9.52e-06   erg/cm2
              Error 3.36e-08 3.94e-08 6.49e-08 6.02e-07 1.61e-07 6.29e-07   erg/cm2
Peak flux Power-law 5.37e-01 6.32e-01 5.37e-01 7.73e-01 1.98e+00 2.48e+00   ph/cm2/s
              Error 9.35e-02 6.43e-02 6.05e-02 1.91e-01 1.79e-01 2.45e-01   ph/cm2/s
 
Fluence   Cutoff-PL 4.74e-07 1.02e-06 1.69e-06 6.34e-06 4.64e-06 9.56e-06   erg/cm2
              Error 2.55e-08 3.95e-08 6.28e-08 -------- 1.60e-07 --------   erg/cm2
Peak flux Cutoff-PL 5.43e-01 6.35e-01 5.34e-01 7.55e-01 1.98e+00 2.46e+00   ph/cm2/s
              Error 9.30e-02 6.41e-02 -------- 2.40e-01 1.79e-01 2.72e-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    1.270    0.065    -      -           3.67e-03 1.16e-04   61.170 57
CPL   1.268    0.065    9999.4    0.0      3.69e-03 2.75e-04   61.380 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.236    0.170    -      -           1.68e-02 1.51e-03   60.020 57
CPL   1.239    0.171    9999.4    0.0      1.68e-02 1.21e-02   60.050 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: 103.296000 sec.
T50 in the 50-300 keV band: 35.008000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  126.988  -20.496  106.492
T90   107.668   -6.224  101.444
T50    38.948   10.448   49.396
Peak    1.000   24.680   25.680
  • 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
      356.7830     0.3123   0.0079    20.4484    63.9740         1.9488337     24.335 TRIG_00319584                 
     
    Foreground time interval of the image:
    -20.496  12.005 (delta_t =  32.501 [sec])
    Background time interval of the image:
    -239.296 -20.496 (delta_t = 218.800 [sec])
    

    Lightcurves

    Notes:

    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:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from  -20.496 sec. to  106.492 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.27000     ( -0.0650173   0.0647763 )
    Norm@50keV  : 3.66994E-03    ( -0.000115863   0.000115819 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.17 using 59 PHA bins.
    # Reduced chi-squared =          1.073 for     57 degrees of freedom 
    # Null hypothesis probability =   3.286188e-01
     
    Photon flux (15-150 keV)    in 127 sec: 0.435506 ( -0.0148354  0.0149195 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.64039e-06 ( -1.60269e-07  1.6121e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -20.496 sec. to  106.492 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.26767     ( -0.0669461   0.063753 )
    Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
    Norm@50keV  : 3.68553E-03    ( -0.000115867   0.000433609 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.38 using 59 PHA bins.
    # Reduced chi-squared =          1.096 for     56 degrees of freedom 
    # Null hypothesis probability =   2.892682e-01
     
    Photon flux (15-150 keV)    in 127 sec: 0.435274 ( -0.014851  0.014889 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.64438e-06 ( -1.64465e-07  1.54991e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  -20.496 sec. to  106.492 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.01638   ( 1.01638   1.01638 )
    beta        : -1.26998    ( -0.0647762   0.0650225 )
    Epeak [keV] : 43.6675      ( -43.6672 -43.6672 )
    Norm@50keV   : 6.90241E-03    ( -0.00242434   0.507637 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.17 using 59 PHA bins.
    # Reduced chi-squared =          1.112 for     55 degrees of freedom 
    # Null hypothesis probability =   2.640658e-01
     
    Photon flux (15-150 keV)    in 127 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]    : 19.6198  (  )
    R^2/D10^2   : 1.97575E-02  (   )
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         344.05 using 59 PHA bins.
    # Reduced chi-squared =         6.0359 for     57 degrees of freedom 
    # Null hypothesis probability =   1.220643e-42
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.876e-07   1.372e-08
    25- 50  9.225e-07   4.267e-08
    50-150  2.625e-06   1.619e-07
    15-150  3.735e-06   1.441e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (      )
    Norm        : 1.82794       (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         138.68 using 59 PHA bins.
    # Reduced chi-squared =         2.4330 for     57 degrees of freedom 
    # Null hypothesis probability =   9.280687e-09
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.781e-07   2.000e-08
    25- 50  1.112e-06   3.912e-08
    50-150  2.439e-06   8.255e-08
    15-150  4.129e-06   1.530e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.62984        (-0.795795      0.87172)
    R1^2/D10^2  : 0.331093        (-0.102794      0.16061)
    kT2 [keV]   : 39.2062        (-5.1509      7.53719)
    R2^2/D10^2  : 1.96423E-03    (-0.000755677   0.00101565)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          56.62 using 59 PHA bins.
    # Reduced chi-squared =          1.029 for     55 degrees of freedom 
    # Null hypothesis probability =   4.143958e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.765e-07   5.061e-08
    25- 50  1.026e-06   7.436e-08
    50-150  3.327e-06   3.283e-07
    15-150  4.830e-06   3.778e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from   24.680 sec. to   25.680 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.23648     ( -0.170409   0.169763 )
    Norm@50keV  : 1.67943E-02    ( -0.00151453   0.00151155 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.02 using 59 PHA bins.
    # Reduced chi-squared =          1.053 for     57 degrees of freedom 
    # Null hypothesis probability =   3.669285e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.98203 ( -0.179256  0.17951 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.68682e-07 ( -1.77832e-08  1.79874e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   24.680 sec. to   25.680 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.23933     ( -0.177769   0.164507 )
    Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
    Norm@50keV  : 1.68179E-02    ( -0.0168616   0.00736297 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.05 using 59 PHA bins.
    # Reduced chi-squared =          1.072 for     56 degrees of freedom 
    # Null hypothesis probability =   3.312949e-01
     
    Photon flux (15-150 keV)    in 1 sec: 1.98339 ( -0.18084  0.17777 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.67534e-07 ( -1.6681e-08  1.8943e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   24.680 sec. to   25.680 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.950783   ( 0.950779   0.950779 )
    beta        : -1.23683    ( 1.23684   0.170873 )
    Epeak [keV] : 63.6374      ( -63.6374 -63.6374 )
    Norm@50keV   : 3.02630E-02    ( -0.0149719   0 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          60.02 using 59 PHA bins.
    # Reduced chi-squared =          1.091 for     55 degrees of freedom 
    # Null hypothesis probability =   2.989158e-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]    : 18.5893  (-2.63044  3.16407)
    R^2/D10^2   : 0.110739  (-0.0436076   0.0713307)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =         100.49 using 59 PHA bins.
    # Reduced chi-squared =         1.7630 for     57 degrees of freedom 
    # Null hypothesis probability =   3.349014e-04
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.580e-09   1.425e-09
    25- 50  3.589e-08   4.605e-09
    50-150  9.074e-08   1.588e-08
    15-150  1.342e-07   1.860e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 200.000       (      )
    Norm        : 8.06054       (-0.73215     0.732125)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          71.23 using 59 PHA bins.
    # Reduced chi-squared =          1.250 for     57 degrees of freedom 
    # Null hypothesis probability =   9.737881e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.007e-08   4.365e-09
    25- 50  3.861e-08   2.086e-08
    50-150  8.467e-08   4.419e-08
    15-150  1.433e-07   4.576e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 6.46063        (-1.90075      2.44866)
    R1^2/D10^2  : 2.53460        (-1.67446      5.06835)
    kT2 [keV]   : 33.7696        (-8.37108      19.8441)
    R2^2/D10^2  : 1.48782E-02    (-0.0107227   0.0122049)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.85 using 59 PHA bins.
    # Reduced chi-squared =          1.088 for     55 degrees of freedom 
    # Null hypothesis probability =   3.040828e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.798e-08   7.885e-09
    25- 50  3.399e-08   1.262e-08
    50-150  1.233e-07   5.186e-08
    15-150  1.752e-07   6.205e-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: 0.903458     ( -0.129539   0.125752 )
    Norm@50keV  : 3.84541E-03    ( -0.000246547   0.000244159 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          83.14 using 59 PHA bins.
    # Reduced chi-squared =          1.459 for     57 degrees of freedom 
    # Null hypothesis probability =   1.351583e-02
     
    Photon flux (15-150 keV)    in 32.5 sec: 0.441384 ( -0.02826  0.0283926 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.40071e-06 ( -9.34651e-08  9.37931e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.897984     ( -0.148851   0.111168 )
    Epeak [keV] : 1.00000E+04      (   )
    Norm@50keV  : 3.87047E-03    ( -0.000247356   0.000233656 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          83.35 using 59 PHA bins.
    # Reduced chi-squared =          1.488 for     56 degrees of freedom 
    # Null hypothesis probability =   1.031616e-02
     
    Photon flux (15-150 keV)    in 32.5 sec: 0.441201 ( -0.028315  0.028323 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 1.40456e-06 ( -9.75325e-08  8.89233e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -9.99995   ( 9.99995   9.99995 )
    beta        : -0.903452    ( -0.125785   0.129491 )
    Epeak [keV] : 14.7583      ( -14.7583 -14.7583 )
    Norm@50keV   : 0.522645    ( -0.0335088   0.0331853 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          83.14 using 59 PHA bins.
    # Reduced chi-squared =          1.512 for     55 degrees of freedom 
    # Null hypothesis probability =   8.459046e-03
     
    Photon flux (15-150 keV)    in 32.5 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)  = 1.02e-06
    S(50-100 keV) = 1.68e-06
    

    T90 vs. Hardness ratio plot

    T90                                   = 107.668000012636 sec.
    Hardness ratio (energy fluence ratio) = 1.64706
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.3256
    Count Ratio (50-100 keV) / (15-25 keV) = 1.1672
    

    Mask shadow pattern

    IMX = 1.636026670224270E-01, IMY = -3.350496201258050E-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:
    -239.296000 -20.496000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    308.0956  40.9530    7.6  49.6  177.2   0.7097   1.5    0.7	Cyg X-3                       
    326.1064  38.2214    4.2  35.5  178.3   0.6165   2.7    6.8	Cyg X-2                       
    298.3003  41.6244    2.7  57.0  177.3   4.9412   4.3 ------	UNKNOWN                       
    299.7602  56.0420    3.2  57.7 -165.5   3.1562   3.6 ------	UNKNOWN                       
     40.0868  37.7223    2.6  37.6  -76.1   2.2549   4.5 ------	UNKNOWN                       
     47.4341  33.8875    2.7  42.7  -68.4   3.8220   4.3 ------	UNKNOWN                       
     35.6286  51.6138    4.5  41.1  -98.0   2.6470   2.7 ------	UNKNOWN                       
     35.5568  51.9695    5.3  41.3  -98.5   2.5599   2.7 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -20.496000 12.004600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    308.0741  41.0581    7.4  49.6  177.4   0.2529   1.6    6.5	Cyg X-3                       
    326.2455  38.3776    3.6  35.5  178.7   0.2829   3.2    4.8	Cyg X-2                       
    356.7830   0.3122    0.5  20.4   64.0   1.9491  24.3  193.9	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    64.004600 482.834000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    326.1689  38.3152  100.2  47.3  172.6   0.4311   0.1    0.4	Cyg X-2                       
    319.9531  24.1376    2.3  42.9  152.1  17.9640   5.1 ------	UNKNOWN                       
      0.1368 -31.7760    2.6  32.2   20.2   7.6153   4.4 ------	UNKNOWN                       
    353.8194 -21.6099    3.0  22.1   32.9   5.7089   3.9 ------	UNKNOWN                       
    340.1769  54.5879    2.9  56.0 -166.0  20.8807   4.0 ------	UNKNOWN                       
     35.4886  15.1323    3.0  41.0  -87.5  21.4450   3.9 ------	UNKNOWN                       
    
    Plot creation:
    Sun May 31 06:39:39 EDT 2015