batgrbproduct Analysis for Trigger=178750

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Wed Jan 22 18:46:17 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger178750
======================================================================

  Trigger: 00178750      Segment: 000

  BAT Trigger Time: 159810892.8   [s; MET]
      Trigger Stop: 159810893.824   [s; MET]
               UTC: 2006-01-24T15:54:51.825540    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 77.0434182139533   Dec: 69.7093915850525  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    6.59
     Image Trigger?:     NO
     Rate S/N Ratio:     10.7238052947636  [ if not an image trigger ]
     Image S/N Ratio:    6.59

  Flight Position:   [ source = BAT ]
    RA: 77.0434182139533   Dec: 69.7093915850525  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 77.1048846448311   Dec: 69.7250425081988  [deg; J2000]  
        { 05h 08m 25.2s , +69d 43' 30.2" }
         +/- 1.71076130854364 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.71950606777471 [arcmin] (formal 1-sigma fit error)
    SNR: 14.1250709479624
 
  Angular difference between Flight and Ground position is 1.586276 arcmin
 
  Partial Coding Fraction: 0.6171875    [ including projection effects ]

  Duration
     T90: 13.4239999949932 +/- 1.2916485778453
        Measured from: -0.548000007867813
                   to: 12.8759999871254     [s; relative to TRIGTIME]
     T50: 7.90000000596046 +/- 2.23261727894755
        Measured from: 1.21999999880791
                   to: 9.12000000476837     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.183999985456467     
                   to: 1.18399998545647     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.20000001788139     
                   to: 13.5479999780655     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.243279   0.310482   0.159298   0.061306
           0.024313   0.025660   0.023216   0.022237 [error]
 Peak      0.024301   0.040557   0.028215   0.013410
           0.006538   0.006896   0.006483   0.005819 [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 8.67e-08 1.32e-07 1.50e-07 3.25e-07 4.65e-07 6.93e-07   erg/cm2
              Error 1.27e-08 1.26e-08 2.31e-08 1.02e-07 5.34e-08 1.25e-07   erg/cm2
Peak flux Power-law 2.99e-01 2.88e-01 1.93e-01 2.02e-01 8.61e-01 9.81e-01   ph/cm2/s
              Error 9.66e-02 6.00e-02 5.31e-02 1.11e-01 1.76e-01 2.04e-01   ph/cm2/s
 
Fluence   Cutoff-PL 8.62e-08 1.33e-07 1.50e-07 2.81e-07 4.62e-07 6.49e-07   erg/cm2
              Error 1.36e-08 1.55e-08 2.37e-08 1.95e-07 6.09e-08 1.93e-07   erg/cm2
Peak flux Cutoff-PL 2.76e-01 3.08e-01 1.99e-01 9.86e-02 8.43e-01 8.81e-01   ph/cm2/s
              Error 1.09e-01 7.62e-02 6.00e-02 1.26e-01 1.80e-01 2.42e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 2.76e-01 3.07e-01 1.99e-01 1.02e-01 8.44e-01 8.88e-01   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    1.814    0.180    -      -           3.43e-03 3.84e-04   41.150 57
CPL   1.737    0.707     148.0   -0.0      3.79e-03 4.31e-03   41.120 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.577    0.351    -      -           6.75e-03 1.46e-03   44.240 57
CPL   0.978    0.967      79.3    0.0      1.42e-02 0.00e+00   43.620 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: 3.456000 sec.
T50 in the 50-300 keV band: 1.472000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   14.748   -1.200   13.548
T90    13.424   -0.548   12.876
T50     7.900    1.220    9.120
Peak    1.000    0.184    1.184
  • Click here for the BAT GCN circular template
  • 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
       77.1049    69.7250   0.0135    37.8139  -158.2628         0.8451603     14.125 TRIG_00178750                 
     
    Foreground time interval of the image:
     -1.200  13.548 (delta_t =  14.748 [sec])
    Background time interval of the image:
    -27.899  -1.200 (delta_t =  26.699 [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   -1.200 sec. to   13.548 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.81370     ( -0.176925   0.18285 )
    Norm@50keV  : 3.42799E-03    ( -0.000388214   0.000380674 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          41.15 using 59 PHA bins.
    # Reduced chi-squared =         0.7220 for     57 degrees of freedom 
    # Null hypothesis probability =   9.435459e-01
     
    Photon flux (15-150 keV)    in 14.75 sec: 0.474902 ( -0.0459631  0.0459863 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.65277e-07 ( -5.29647e-08  5.3843e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -1.200 sec. to   13.548 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.73706     ( -0.778234   0.635754 )
    Epeak [keV] : 148.016      ( -153.248 -153.261 )
    Norm@50keV  : 3.78863E-03    ( -0.00200995   0.00660497 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          41.12 using 59 PHA bins.
    # Reduced chi-squared =         0.7343 for     56 degrees of freedom 
    # Null hypothesis probability =   9.318324e-01
     
    Photon flux (15-150 keV)    in 14.75 sec: 0.473361 ( -0.047518  0.047093 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.61535e-07 ( -6.48808e-08  5.69483e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -1.200 sec. to   13.548 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 4.49208   ( -4.49208   -4.49208 )
    beta        : -1.99419    ( -0.256661   0.227282 )
    Epeak [keV] : 25.3459      ( -4.55526 3.72663 )
    Norm@50keV   : 187.635    ( -17.9288   11767.3 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          38.45 using 59 PHA bins.
    # Reduced chi-squared =         0.6991 for     55 degrees of freedom 
    # Null hypothesis probability =   9.560157e-01
     
    Photon flux (15-150 keV)    in 14.75 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]    : 10.3429  (-1.21472  1.41771)
    R^2/D10^2   : 0.193905  (-0.0745096   0.117465)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.79 using 59 PHA bins.
    # Reduced chi-squared =          1.154 for     57 degrees of freedom 
    # Null hypothesis probability =   1.988288e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.298e-08   1.136e-08
    25- 50  1.641e-07   2.066e-08
    50-150  9.435e-08   2.444e-08
    15-150  3.214e-07   4.432e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 95.3121       (-29.4807      56.9227)
    Norm        : 2.11471       (-0.283382     0.351305)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          42.00 using 59 PHA bins.
    # Reduced chi-squared =         0.7369 for     57 degrees of freedom 
    # Null hypothesis probability =   9.314813e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  8.149e-08   1.165e-08
    25- 50  1.395e-07   1.499e-08
    50-150  2.199e-07   8.621e-08
    15-150  4.410e-07   1.016e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.47686        (-1.40276      1.45752)
    R1^2/D10^2  : 0.548871        (-0.254274      0.307425)
    kT2 [keV]   : 39.1117        (-16.5868      140.737)
    R2^2/D10^2  : 1.22378E-03    (-0.00112654   0.00617384)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          37.20 using 59 PHA bins.
    # Reduced chi-squared =         0.6763 for     55 degrees of freedom 
    # Null hypothesis probability =   9.685555e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  8.108e-08   2.139e-08
    25- 50  1.447e-07   3.930e-08
    50-150  2.531e-07   1.358e-07
    15-150  4.789e-07   1.682e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.184 sec. to    1.184 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.57664     ( -0.344453   0.357902 )
    Norm@50keV  : 6.75070E-03    ( -0.00147938   0.00144931 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.24 using 59 PHA bins.
    # Reduced chi-squared =         0.7761 for     57 degrees of freedom 
    # Null hypothesis probability =   8.915194e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.861337 ( -0.175621  0.175813 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.33198e-08 ( -1.47219e-08  1.51269e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.184 sec. to    1.184 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.978188     ( -1.02668   0.907951 )
    Epeak [keV] : 79.3279      (   )
    Norm@50keV  : 1.41795E-02    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          43.62 using 59 PHA bins.
    # Reduced chi-squared =         0.7790 for     56 degrees of freedom 
    # Null hypothesis probability =   8.857956e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.842936 ( -0.180318  0.180174 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.00302e-08 ( -1.63357e-08  1.66981e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.184 sec. to    1.184 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.01590   ( -0.784077   1.31635 )
    beta        : -9.37155    ( 9.37167   19.3717 )
    Epeak [keV] : 83.2862      ( -38.583 -83.0671 )
    Norm@50keV   : 1.34087E-02    ( -0.00701307   0.0104121 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          43.63 using 59 PHA bins.
    # Reduced chi-squared =         0.7933 for     55 degrees of freedom 
    # Null hypothesis probability =   8.653447e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.843745 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 6.12214e-08 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 12.9031  (-3.07791  4.21946)
    R^2/D10^2   : 0.165242  (-0.104559   0.273124)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          48.27 using 59 PHA bins.
    # Reduced chi-squared =         0.8468 for     57 degrees of freedom 
    # Null hypothesis probability =   7.882599e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.835e-09   2.266e-09
    25- 50  1.993e-08   8.410e-09
    50-150  2.089e-08   1.010e-08
    15-150  4.666e-08   1.721e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 170.008       (-98.5401      -169.949)
    Norm        : 3.55274       (-0.740629     0.970673)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          43.73 using 59 PHA bins.
    # Reduced chi-squared =         0.7672 for     57 degrees of freedom 
    # Null hypothesis probability =   9.016982e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.016e-09   5.190e-09
    25- 50  1.700e-08   9.760e-09
    50-150  3.526e-08   2.016e-08
    15-150  6.128e-08   3.505e-08
    
    Double BB
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 7.42565        (-3.65461      4.70345)
    R1^2/D10^2  : 0.812268        (      )
    kT2 [keV]   : 26.7357        (-22.8323      -26.7849)
    R2^2/D10^2  : 8.88801E-03    (-0.0087825   0.0839781)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          43.00 using 59 PHA bins.
    #Fit statistic : Chi-Squared =          42.81 using 59 PHA bins.
    # Reduced chi-squared =         0.7818 for     55 degrees of freedom 
    # Reduced chi-squared =         0.7784 for     55 degrees of freedom 
    # Null hypothesis probability =   8.800565e-01
    # Null hypothesis probability =   8.841606e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  8.565e-09   5.170e-09
    25- 50  1.715e-08   9.165e-09
    50-150  3.177e-08   1.883e-08
    15-150  5.748e-08   3.225e-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: 1.81370     ( -0.176925   0.18285 )
    Norm@50keV  : 3.42799E-03    ( -0.000388214   0.000380674 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          41.15 using 59 PHA bins.
    # Reduced chi-squared =         0.7220 for     57 degrees of freedom 
    # Null hypothesis probability =   9.435459e-01
     
    Photon flux (15-150 keV)    in 14.75 sec: 0.474902 ( -0.0459631  0.0459863 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.65277e-07 ( -5.29647e-08  5.3843e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.73706     ( -0.778234   0.635754 )
    Epeak [keV] : 148.016      ( -153.248 -153.261 )
    Norm@50keV  : 3.78863E-03    ( -0.00200995   0.00660497 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          41.12 using 59 PHA bins.
    # Reduced chi-squared =         0.7343 for     56 degrees of freedom 
    # Null hypothesis probability =   9.318324e-01
     
    Photon flux (15-150 keV)    in 14.75 sec: 0.473361 ( -0.047518  0.047089 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.61535e-07 ( -6.48808e-08  5.69483e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 4.49208   ( -4.49208   -4.49208 )
    beta        : -1.99419    ( -0.256661   0.227282 )
    Epeak [keV] : 25.3459      ( -4.55526 3.72663 )
    Norm@50keV   : 187.635    ( -17.9288   11767.3 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          38.45 using 59 PHA bins.
    # Reduced chi-squared =         0.6991 for     55 degrees of freedom 
    # Null hypothesis probability =   9.560157e-01
     
    Photon flux (15-150 keV)    in 14.75 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)  = 1.32e-07
    S(50-100 keV) = 1.50e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 13.4239999949932 sec.
    Hardness ratio (energy fluence ratio) = 1.13636
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.27624
    Count Ratio (50-100 keV) / (15-25 keV) = 0.654796
    

    Mask shadow pattern

    IMX = -7.208831570264456E-01, IMY = 2.874164623184512E-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:
    -27.899400 -1.200000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    153.2197  -2.4514    2.2  50.0   30.6   1.1404   5.3 ------	UNKNOWN                       
    125.5825  17.7411    2.0  29.6   74.7   0.4329   5.7 ------	UNKNOWN                       
     97.5377  39.4994    2.1  29.8  143.8   0.3538   5.5 ------	UNKNOWN                       
    126.4748  29.0488    2.5  18.7   82.7   0.2397   4.6 ------	UNKNOWN                       
    151.8331  17.2636    2.2  30.8   23.8   0.3154   5.3 ------	UNKNOWN                       
    205.8990  65.8294    3.0  40.7  -93.1   0.7221   3.8 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -1.200000 13.548000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    138.8304   0.0306    2.1  45.6   49.4   1.0380   5.5 ------	UNKNOWN                       
     71.0440  39.3607    3.3  48.0  158.7   0.4352   3.5 ------	UNKNOWN                       
    150.5175  18.5246    2.6  29.2   25.3   0.2588   4.5 ------	UNKNOWN                       
     77.1049  69.7250    0.8  37.8 -158.3   0.8451  14.1 ------	UNKNOWN                       
    181.3243  64.6652    2.4  30.4  -93.1   0.3429   4.7 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    89.300590 302.276800
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     83.6282  22.0211    0.9  47.9  139.3   9.4691  12.6    0.5	Crab                          
    117.8743  37.1133    2.1  39.2   92.0   3.4304   5.4 ------	UNKNOWN                       
    158.2590  49.1733    2.8  41.9   43.0   1.7101   4.1 ------	UNKNOWN                       
    171.6323  67.4856    3.0  31.2   15.2   0.7157   3.9 ------	UNKNOWN                       
     72.4904  54.6961    2.7  15.2  157.6   0.6567   4.3 ------	UNKNOWN                       
    307.2821  61.8627    3.3  43.7  -64.0   2.6007   3.5 ------	UNKNOWN                       
    
    Plot creation:
    Sun May 31 14:24:46 EDT 2015