batgrbproduct analysis for trigger=163136

batgrbproduct Analysis for Trigger=163136

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): Sat May  9 19:48:33 EDT 2015
             Host Name: bat1
   Current Working Dir: /local/data/bat1/alien/Swift_3rdBATcatalog/event/batevent_reproc/trigger163136
======================================================================

  Trigger: 00163136      Segment: 000

  BAT Trigger Time: 153191540.352   [s; MET]
      Trigger Stop: 153191542.4   [s; MET]
               UTC: 2005-11-09T01:12:20.522800    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 330.295827113925   Dec: 40.8374744574041  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.47
     Image Trigger?:     NO
     Rate S/N Ratio:     20.0748598998847  [ if not an image trigger ]
     Image S/N Ratio:    11.47

  Flight Position:   [ source = BAT ]
    RA: 330.295827113925   Dec: 40.8374744574041  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 330.320872746052   Dec: 40.8533809096347  [deg; J2000]  
        { 22h 01m 17.0s , +40d 51' 12.2" }
         +/- 2.08358661304973 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.13874793405293 [arcmin] (formal 1-sigma fit error)
    SNR: 10.65794062544
 
  Angular difference between Flight and Ground position is 1.484297 arcmin
 
  Partial Coding Fraction: 0.08691406    [ including projection effects ]

  Duration
     T90: 37.1999999582767 +/- 6.0690849287056
        Measured from: -2.53599998354912
                   to: 34.6639999747276     [s; relative to TRIGTIME]
     T50: 22.255999982357 +/- 15.7304596505343
        Measured from: 0.23199999332428
                   to: 22.4879999756813     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.684000015258789     
                   to: 1.68400001525879     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -3.71999999880791     
                   to: 40.5839999914169     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.592517   1.166720   0.987845   0.255585
           0.121490   0.127841   0.114944   0.102488 [error]
 Peak      0.079306   0.188749   0.152734   0.063425
           0.020935   0.025367   0.023284   0.017848 [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 2.93e-07 5.38e-07 7.58e-07 2.25e-06 2.17e-06 3.84e-06   erg/cm2
              Error 6.30e-08 7.15e-08 1.10e-07 6.98e-07 2.75e-07 7.74e-07   erg/cm2
Peak flux Power-law 1.23e+00 1.28e+00 9.38e-01 1.11e+00 3.88e+00 4.56e+00   ph/cm2/s
              Error 3.50e-01 2.35e-01 1.68e-01 3.86e-01 6.64e-01 7.29e-01   ph/cm2/s
 
Fluence   Cutoff-PL 2.53e-07 5.75e-07 8.10e-07 9.31e-07 2.09e-06 2.57e-06   erg/cm2
              Error 7.60e-08 8.67e-08 1.30e-07 1.08e-06 2.94e-07 1.11e-06   erg/cm2
Peak flux Cutoff-PL 1.05e+00 1.40e+00 1.04e+00 5.20e-01 3.82e+00 4.01e+00   ph/cm2/s
              Error 4.09e-01 2.95e-01 2.19e-01 5.87e-01 6.67e-01 8.70e-01   ph/cm2/s
 
Fluence        Band 2.34e-07 5.99e-07 7.77e-07 1.54e-06 2.09e-06 3.18e-06   erg/cm2
              Error 8.35e-08 -------- 1.32e-07 -------- 2.86e-07 --------   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    1.503    0.201    -      -           5.17e-03 6.23e-04   63.140 57
CPL   0.760    0.929      88.1  -32.4      1.18e-02 1.59e-02   60.900 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.448    0.249    -      -           3.15e-02 5.04e-03   61.610 57
CPL   0.583    1.208      86.1    0.0      8.43e-02 0.00e+00   59.890 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: 61.248000 sec.
T50 in the 50-300 keV band: 31.936000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   44.304   -3.720   40.584
T90    37.200   -2.536   34.664
T50    22.256    0.232   22.488
Peak    1.000    0.684    1.684

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
  330.3209    40.8534   0.0181    53.5886     7.3828         2.3774850     10.658 TRIG_00163136                 
 
Foreground time interval of the image:
 -3.720  24.749 (delta_t =  28.469 [sec])
Background time interval of the image:
-299.352  -3.720 (delta_t = 295.632 [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 2.048000

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 2.048000

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 2.048000

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   -3.720 sec. to   40.584 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.50317     ( -0.20101   0.201093 )
Norm@50keV  : 5.16639E-03    ( -0.000622869   0.000622164 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.14 using 59 PHA bins.
# Reduced chi-squared =          1.108 for     57 degrees of freedom 
# Null hypothesis probability =   2.683504e-01
 
Photon flux (15-150 keV)    in 44.3 sec: 0.645520 ( -0.0827123  0.0831717 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.17007e-06 ( -2.74649e-07  2.75802e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -3.720 sec. to   40.584 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.759769     ( -1.04507   0.81363 )
Epeak [keV] : 88.1290      ( -23.4205 -88.129 )
Norm@50keV  : 1.18089E-02    ( -0.00688284   0.0248996 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.90 using 59 PHA bins.
# Reduced chi-squared =          1.087 for     56 degrees of freedom 
# Null hypothesis probability =   3.040677e-01
 
Photon flux (15-150 keV)    in 44.3 sec: 0.625454 ( -0.085679  0.086126 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.09454e-06 ( -2.95397e-07  2.9292e-07 ) ergs/cm2

Band function

Time interval is from   -3.720 sec. to   40.584 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -6.33777E-02   ( -1.84029   5.05534 )
beta        : -1.91130    ( 1.91051   0.472538 )
Epeak [keV] : 60.3767      ( -35.8467 195.753 )
Norm@50keV   : 2.99935E-02    ( -0.0305238   70.0499 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.17 using 59 PHA bins.
# Reduced chi-squared =          1.094 for     55 degrees of freedom 
# Null hypothesis probability =   2.940524e-01
 
Photon flux (15-150 keV)    in 44.3 sec: 0.618386 ( 6.38161  -0.087565 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.09174e-06 ( -2.09143e-06  -2.84596e-07 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 15.7626  (-2.07341  2.46528)
R^2/D10^2   : 6.31757E-02  (-0.0258377   0.0417025)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          70.65 using 59 PHA bins.
# Reduced chi-squared =          1.239 for     57 degrees of freedom 
# Null hypothesis probability =   1.056848e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  1.442e-07   3.418e-08
25- 50  5.992e-07   9.458e-08
50-150  1.035e-06   2.328e-07
15-150  1.778e-06   2.804e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-71.7475      -199.363)
Norm        : 2.67402       (-0.320347     0.320531)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.93 using 59 PHA bins.
# Reduced chi-squared =          1.086 for     57 degrees of freedom 
# Null hypothesis probability =   3.046770e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.950e-07   1.663e-07
25- 50  5.674e-07   2.994e-07
50-150  1.244e-06   6.867e-07
15-150  2.107e-06   1.160e-06

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 9.95017        (-4.37705      3.71607)
R1^2/D10^2  : 0.219994        (-0.125867      0.964819)
kT2 [keV]   : 33.6085        (-28.1088      -33.6945)
R2^2/D10^2  : 2.88051E-03    (-0.00281573   0.0236158)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.38 using 59 PHA bins.
# Reduced chi-squared =          1.098 for     55 degrees of freedom 
# Null hypothesis probability =   2.877109e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.171e-07   1.229e-07
25- 50  6.194e-07   3.349e-07
50-150  1.272e-06   6.421e-07
15-150  2.108e-06   1.085e-06

Peak spectrum fit

Power-law model

Time interval is from    0.684 sec. to    1.684 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.44795     ( -0.250857   0.246813 )
Norm@50keV  : 3.14825E-02    ( -0.00503617   0.00503613 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.61 using 59 PHA bins.
# Reduced chi-squared =          1.081 for     57 degrees of freedom 
# Null hypothesis probability =   3.145481e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.87775 ( -0.662614  0.665727 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.0138e-07 ( -4.99766e-08  5.00894e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    0.684 sec. to    1.684 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 0.582775     ( -1.444   0.971728 )
Epeak [keV] : 86.1010      (   )
Norm@50keV  : 8.43378E-02    (     )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          59.89 using 59 PHA bins.
# Reduced chi-squared =          1.069 for     56 degrees of freedom 
# Null hypothesis probability =   3.364847e-01
 
Photon flux (15-150 keV)    in 1 sec: 3.82256 ( -0.66543  0.66945 ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.94436e-07 ( -5.2666e-08  5.1872e-08 ) ergs/cm2

Band function

Time interval is from    0.684 sec. to    1.684 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : 2.55027   ( -2.29304   -1.1399 )
beta        : -1.91665    ( 1.93066   0.507295 )
Epeak [keV] : 43.1752      ( -23.0321 45.8873 )
Norm@50keV   : 6.99918    ( -6.98889   129.902 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.67 using 59 PHA bins.
# Reduced chi-squared =          1.049 for     55 degrees of freedom 
# Null hypothesis probability =   3.766112e-01
 
Photon flux (15-150 keV)    in 1 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 2.9456e-07 ( -2.94553e-07  -5.0579e-08 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 15.7577  (-2.58885  3.22401)
R^2/D10^2   : 0.404815  (-0.200797   0.366783)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.08 using 59 PHA bins.
# Reduced chi-squared =          1.142 for     57 degrees of freedom 
# Null hypothesis probability =   2.160764e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.085e-08   6.835e-09
25- 50  8.660e-08   1.865e-08
50-150  1.494e-07   4.055e-08
15-150  2.568e-07   5.740e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 199.363       (-75.5928      -199.363)
Norm        : 16.3797       (-2.61574     2.61595)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.21 using 59 PHA bins.
# Reduced chi-squared =          1.074 for     57 degrees of freedom 
# Null hypothesis probability =   3.273093e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.079e-08   2.363e-08
25- 50  7.846e-08   4.495e-08
50-150  1.721e-07   9.650e-08
15-150  2.913e-07   1.644e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 11.6280        (-3.47157      3.16651)
R1^2/D10^2  : 0.980311        (-0.536479      0.920589)
kT2 [keV]   : 79.4964        (-84.1963      -84.1964)
R2^2/D10^2  : 1.70262E-03    (-0.0011542   0.0657022)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.81 using 59 PHA bins.
# Reduced chi-squared =          1.033 for     55 degrees of freedom 
# Null hypothesis probability =   4.075715e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  2.875e-08   1.374e-08
25- 50  9.099e-08   5.152e-08
50-150  1.770e-07   8.916e-08
15-150  2.967e-07   1.419e-07

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: 1.65893     ( -0.225036   0.229946 )
Norm@50keV  : 5.96622E-03    ( -0.00082233   0.000816438 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          63.15 using 59 PHA bins.
# Reduced chi-squared =          1.108 for     57 degrees of freedom 
# Null hypothesis probability =   2.681239e-01
 
Photon flux (15-150 keV)    in 28.47 sec: 0.781350 ( -0.108864  0.109305 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.57836e-06 ( -2.26418e-07  2.2805e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.08933     ( -1.27707   0.744396 )
Epeak [keV] : 78.3891      ( -27.6075 -78.425 )
Norm@50keV  : 1.17416E-02    ( -0.00641486   0.0421352 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          62.19 using 59 PHA bins.
# Reduced chi-squared =          1.110 for     56 degrees of freedom 
# Null hypothesis probability =   2.653979e-01
 
Photon flux (15-150 keV)    in 28.47 sec: 0.764465 ( -0.113087  0.113065 ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.52284e-06 ( -2.56831e-07  2.49457e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -0.124850   ( 0.264382   0.264382 )
beta        : -2.09347    ( 2.06854   0.505056 )
Epeak [keV] : 51.1543      ( -51.125 190.823 )
Norm@50keV   : 4.30671E-02    ( -0.0439616   76.0536 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.66 using 59 PHA bins.
# Reduced chi-squared =          1.103 for     55 degrees of freedom 
# Null hypothesis probability =   2.792497e-01
 
Photon flux (15-150 keV)    in 28.47 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 1.50899e-06 ( 0  0 ) ergs/cm2

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

S(25-50 keV)  = 5.38e-07
S(50-100 keV) = 7.58e-07

T90 vs. Hardness ratio plot

T90                                   = 37.1999999582767 sec.
Hardness ratio (energy fluence ratio) = 1.40892

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.96909
Count Ratio (50-100 keV) / (15-25 keV) = 1.6672

Mask shadow pattern

IMX = 1.344559975624186E+00, IMY = -1.742180725927704E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 2.048000

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:
-299.352000 -3.720000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.1699  38.3225   27.4  54.5    2.5  -0.2895  -0.4    0.1	Cyg X-2                       
 57.1551 -15.6675    2.6  51.6  150.7   4.1016   4.5 ------	UNKNOWN

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

Time interval of the image:
-3.720000 24.748600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
326.2365  38.3928    5.6  54.5    2.6   0.4526   2.1    5.2	Cyg X-2                       
330.3189  40.8508    1.1  53.6    7.4   2.4313  10.9 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:
107.748590 211.548600
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
299.5792  35.2063    0.3  24.7  -90.3   5.0313  34.4    0.6	Cyg X-1                       
308.0899  40.9776    1.4  16.8  -79.4   0.9213   8.4    1.8	Cyg X-3                       
326.1195  38.4665    3.5   4.0 -122.1   0.3267   3.3    9.0	Cyg X-2                       
 27.8437  46.9138    2.5  40.9   64.4   1.6617   4.6 ------	UNKNOWN                       
313.4848  75.0351    3.5  35.0   -4.6   0.4375   3.3 ------	UNKNOWN

Plot creation:
Sun May 31 15:14:41 EDT 2015