batgrbproduct analysis for trigger=297628

batgrbproduct Analysis for Trigger=297628

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): Mon Jan 20 05:16:06 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger297628
======================================================================

  Trigger: 00297628      Segment: 000

  BAT Trigger Time: 217987437.696   [s; MET]
      Trigger Stop: 217987441.792   [s; MET]
               UTC: 2007-11-29T00:03:55.301720    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 220.089670547025   Dec: -26.6590902014323  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    11.85
     Image Trigger?:     NO
     Rate S/N Ratio:     11.5325625946708  [ if not an image trigger ]
     Image S/N Ratio:    11.85

  Flight Position:   [ source = BAT ]
    RA: 220.089670547025   Dec: -26.6590902014323  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 220.048957876435   Dec: -26.6699762684598  [deg; J2000]  
        { 14h 40m 11.7s , -26d 40' 11.9" }
         +/- 2.06367015489598 [arcmin] (estimated 90% radius based on SNR)
         +/- 1.06871041757118 [arcmin] (formal 1-sigma fit error)
    SNR: 10.8051863397994
 
  Angular difference between Flight and Ground position is 2.278593 arcmin
 
  Partial Coding Fraction: 0.5546875    [ including projection effects ]

  Duration
     T90: 408.080000013113 +/- 52.3240852031849
        Measured from: -0.412000000476837
                   to: 407.668000012636     [s; relative to TRIGTIME]
     T50: 186.136000007391 +/- 23.5661112465353
        Measured from: 15.6359999775887
                   to: 201.77199998498     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 5.82799997925758     
                   to: 6.82799997925758     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -5.64000001549721     
                   to: 465.079999983311     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     2.227064   2.595751   1.522351   0.171889
           0.151452   0.156152   0.139981   0.133959 [error]
 Peak      0.031898   0.026211   0.049538   0.013780
           0.007360   0.007821   0.007235   0.006424 [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 7.16e-07 1.06e-06 1.16e-06 2.41e-06 3.67e-06 5.35e-06   erg/cm2
              Error 7.87e-08 7.54e-08 1.37e-07 5.78e-07 3.12e-07 7.10e-07   erg/cm2
Peak flux Power-law 2.57e-01 2.97e-01 2.47e-01 3.45e-01 9.25e-01 1.15e+00   ph/cm2/s
              Error 9.63e-02 6.67e-02 5.90e-02 1.80e-01 1.85e-01 2.39e-01   ph/cm2/s
 
Fluence   Cutoff-PL 6.86e-07 1.10e-06 1.15e-06 1.23e-06 3.52e-06 4.17e-06   erg/cm2
              Error 8.85e-08 9.84e-08 1.48e-07 1.20e-06 3.70e-07 8.29e-07   erg/cm2
Peak flux Cutoff-PL 2.57e-01 2.97e-01 2.47e-01 3.42e-01 9.25e-01 1.14e+00   ph/cm2/s
              Error 1.29e-01 7.02e-02 6.60e-02 2.76e-01 1.88e-01 2.93e-01   ph/cm2/s
 
Fluence        Band 6.66e-07 1.12e-06 1.11e-06 1.97e-06 3.55e-06 4.88e-06   erg/cm2
              Error 9.29e-08 -------- 1.51e-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    1.860    0.137    -      -           8.48e-04 7.17e-05   60.190 57
CPL   1.473    0.530      59.3  -22.4      1.40e-03 1.07e-03   58.580 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.267    0.364    -      -           7.80e-03 1.53e-03   65.150 57
CPL   1.269    0.617    9999.4    0.0      7.79e-03 1.87e-02   65.160 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: 177.472000 sec.
T50 in the 50-300 keV band: 106.944000 sec.

 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  470.720   -5.640  465.080
T90   408.080   -0.412  407.668
T50   186.136   15.636  201.772
Peak    1.000    5.828    6.828

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
  220.0490   -26.6700   0.0178    28.1558  -109.5893         6.6201649     10.805 TRIG_00297628                 
 
Foreground time interval of the image:
 -5.640 465.080 (delta_t = 470.720 [sec])
Background time interval of the image:
-139.995  -5.640 (delta_t = 134.355 [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 4.096000

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 4.096000

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 4.096000

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   -5.640 sec. to  465.080 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.85990     ( -0.134976   0.138648 )
Norm@50keV  : 8.48462E-04    ( -7.21817e-05   7.11485e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.19 using 59 PHA bins.
# Reduced chi-squared =          1.056 for     57 degrees of freedom 
# Null hypothesis probability =   3.610211e-01
 
Photon flux (15-150 keV)    in 470.7 sec: 0.119743 ( -0.00863608  0.00864181 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.67173e-06 ( -3.10123e-07  3.14599e-07 ) ergs/cm2

Cutoff power-law model

Time interval is from   -5.640 sec. to  465.080 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.47316     ( -0.587533   0.473137 )
Epeak [keV] : 59.3183      ( -14.4822 -59.3183 )
Norm@50keV  : 1.39502E-03    ( -0.000592836   0.00155217 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.58 using 59 PHA bins.
# Reduced chi-squared =          1.046 for     56 degrees of freedom 
# Null hypothesis probability =   3.811383e-01
 
Photon flux (15-150 keV)    in 470.7 sec: 0.117411 ( -0.009155  0.009152 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.51682e-06 ( -3.66689e-07  3.74098e-07 ) ergs/cm2

Band function

Time interval is from   -5.640 sec. to  465.080 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -7.10831E-02   ( 0.80792   0.80792 )
beta        : -2.02559    ( 2.02701   0.229466 )
Epeak [keV] : 32.3129      ( -37.0218 -37.0218 )
Norm@50keV   : 1.39047E-02    ( -0.0138939   74.605 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.49 using 59 PHA bins.
# Reduced chi-squared =          1.045 for     55 degrees of freedom 
# Null hypothesis probability =   3.831738e-01
 
Photon flux (15-150 keV)    in 470.7 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.55384e-06 ( 0  0 ) ergs/cm2

Single BB

 
Spectral model blackbody:
------------------------------------------------------------
Parameters  : value    Lower 90%  Upper 90%
kT [keV]    : 10.6838  (-0.96601  1.09069)
R^2/D10^2   : 4.27030E-02  (-0.0131131   0.0185408)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          99.16 using 59 PHA bins.
# Reduced chi-squared =          1.740 for     57 degrees of freedom 
# Null hypothesis probability =   4.579333e-04
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  4.763e-07   6.103e-08
25- 50  1.297e-06   1.061e-07
50-150  8.170e-07   1.386e-07
15-150  2.590e-06   2.323e-07

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 86.6963       (-20.0953      31.3455)
Norm        : 0.545314       (-0.0578615     0.0678299)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.80 using 59 PHA bins.
# Reduced chi-squared =          1.032 for     57 degrees of freedom 
# Null hypothesis probability =   4.094578e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.689e-07   7.508e-08
25- 50  1.122e-06   8.543e-08
50-150  1.669e-06   6.044e-07
15-150  3.460e-06   5.961e-07

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 6.39745        (-1.1504      1.21572)
R1^2/D10^2  : 0.211283        (-0.0951238      0.217102)
kT2 [keV]   : 22.5833        (-4.94736      8.74097)
R2^2/D10^2  : 1.86050E-03    (-0.00129174   0.00305563)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          56.41 using 59 PHA bins.
# Reduced chi-squared =          1.026 for     55 degrees of freedom 
# Null hypothesis probability =   4.221086e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  6.714e-07   1.793e-07
25- 50  1.112e-06   3.104e-07
50-150  1.751e-06   8.854e-07
15-150  3.534e-06   1.206e-06

Peak spectrum fit

Power-law model

Time interval is from    5.828 sec. to    6.828 sec.
 
Spectral model in power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26709     ( -0.364407   0.363537 )
Norm@50keV  : 7.79913E-03    ( -0.00153072   0.00152747 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.15 using 59 PHA bins.
# Reduced chi-squared =          1.143 for     57 degrees of freedom 
# Null hypothesis probability =   2.142794e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.925051 ( -0.18465  0.185233 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.77063e-08 ( -1.72167e-08  1.74898e-08 ) ergs/cm2

Cutoff power-law model

Time interval is from    5.828 sec. to    6.828 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.26939     ( -0.871678   0.36287 )
Epeak [keV] : 9999.36      ( -9999.36 -9999.36 )
Norm@50keV  : 7.78961E-03    ( -0.00153619   0.0358109 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.16 using 59 PHA bins.
# Reduced chi-squared =          1.163 for     56 degrees of freedom 
# Null hypothesis probability =   1.882826e-01
 
Photon flux (15-150 keV)    in 1 sec: 0.925004 ( -0.193117  0.183586 ) ph/cm2/s
Energy fluence (15-150 keV)             : 7.76838e-08 ( -1.78511e-08  1.74475e-08 ) ergs/cm2

Band function

Time interval is from    5.828 sec. to    6.828 sec.
 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -1.04588   ( 1.04589   1.04589 )
beta        : -1.26706    ( -1.53502   0.365006 )
Epeak [keV] : 33.1058      ( -33.1242 -33.1242 )
Norm@50keV   : 1.47275E-02    ( -0.00844929   1.62913 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          65.15 using 59 PHA bins.
# Reduced chi-squared =          1.185 for     55 degrees of freedom 
# Null hypothesis probability =   1.643352e-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]    : 19.7519  (-4.16583  5.84035)
R^2/D10^2   : 4.38385E-02  (-0.0250009   0.052032)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          69.73 using 59 PHA bins.
# Reduced chi-squared =          1.223 for     57 degrees of freedom 
# Null hypothesis probability =   1.199598e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  3.313e-09   1.351e-09
25- 50  1.637e-08   6.454e-09
50-150  4.725e-08   1.912e-08
15-150  6.693e-08   2.361e-08

Thermal bremsstrahlung (OTTB)

 
 
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT [keV]    : 200.000       (      )
Norm        : 3.80304       (-0.753793     0.753752)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          67.24 using 59 PHA bins.
# Reduced chi-squared =          1.180 for     57 degrees of freedom 
# Null hypothesis probability =   1.663947e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.470e-09   5.470e-09
25- 50  1.822e-08   1.060e-08
50-150  3.995e-08   2.269e-08
15-150  6.764e-08   3.906e-08

Double BB

 
 
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters  : value         Lower 90%    Upper 90%
kT1 [keV]   : 3.52874        (-3.33829      2.62215)
R1^2/D10^2  : 14.5836        (-13.5774      -14.5836)
kT2 [keV]   : 23.5310        (-5.61624      9.82298)
R2^2/D10^2  : 2.30059E-02    (-0.0153945   0.0361234)
------------------------------------------------------------
#Fit statistic : Chi-Squared =          61.65 using 59 PHA bins.
# Reduced chi-squared =          1.121 for     55 degrees of freedom 
# Null hypothesis probability =   2.503719e-01
 
Energy  Fluence     90% Error
[keV]   [erg/cm2]   [erg/cm2]
15- 25  9.268e-09   4.960e-09
25- 50  1.428e-08   6.936e-09
50-150  5.183e-08   3.068e-08
15-150  7.538e-08   3.821e-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: 1.85990     ( -0.134976   0.138648 )
Norm@50keV  : 8.48462E-04    ( -7.21817e-05   7.11485e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          60.19 using 59 PHA bins.
# Reduced chi-squared =          1.056 for     57 degrees of freedom 
# Null hypothesis probability =   3.610211e-01
 
Photon flux (15-150 keV)    in 470.7 sec: 0.119743 ( -0.00863608  0.00864181 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.67173e-06 ( -3.10123e-07  3.14599e-07 ) ergs/cm2

Cutoff power-law model

Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
Photon index: 1.47316     ( -0.587533   0.473137 )
Epeak [keV] : 59.3183      ( -14.4822 -59.3183 )
Norm@50keV  : 1.39502E-03    ( -0.000592836   0.00155217 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          58.58 using 59 PHA bins.
# Reduced chi-squared =          1.046 for     56 degrees of freedom 
# Null hypothesis probability =   3.811383e-01
 
Photon flux (15-150 keV)    in 470.7 sec: 0.117411 ( -0.009155  0.009152 ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.51682e-06 ( -3.66689e-07  3.74098e-07 ) ergs/cm2

Band function

 
Spectral model in the Band function:
------------------------------------------------------------
Parameters  : value       lower 90%   higher 90%
alpha       : -7.10831E-02   ( 0.80792   0.80792 )
beta        : -2.02559    ( 2.02701   0.229466 )
Epeak [keV] : 32.3129      ( -37.0218 -37.0218 )
Norm@50keV   : 1.39047E-02    ( -0.0138939   74.5933 )
------------------------------------------------------------
#Fit statistic : Chi-Squared =          57.49 using 59 PHA bins.
# Reduced chi-squared =          1.045 for     55 degrees of freedom 
# Null hypothesis probability =   3.831738e-01
 
Photon flux (15-150 keV)    in 470.7 sec:  (    ) ph/cm2/s
Energy fluence (15-150 keV)             : 3.55384e-06 ( 0  0 ) ergs/cm2

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

S(25-50 keV)  = 1.06e-06
S(50-100 keV) = 1.16e-06

T90 vs. Hardness ratio plot

T90                                   = 408.080000013113 sec.
Hardness ratio (energy fluence ratio) = 1.09434

Color vs. Color plot

Count Ratio  (25-50 keV) / (15-25 keV) = 1.16555
Count Ratio (50-100 keV) / (15-25 keV) = 0.683569

Mask shadow pattern

IMX = -1.794401902565495E-01, IMY = 5.042252352474009E-01

TIME vs. PHA plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

TIME vs. DetID plot around the trigger time

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

100 us light curve (15-350 keV)

Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 4.096000

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:
-139.995400 -5.640000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.0655 -60.6670    5.2  25.1   19.3  -0.3143  -2.2    7.8	Cen X-3                       
186.7774 -62.7539    1.9  24.1   -0.2   0.8619   6.0    3.5	GX 301-2                      
174.7389   6.0794    2.1  46.9  156.2   1.8194   5.4 ------	UNKNOWN                       
152.4209 -58.3187    1.8  30.8   34.9   1.2001   6.3 ------	UNKNOWN                       
213.6382  16.2495    3.3  59.4 -156.3   3.5860   3.4 ------	UNKNOWN

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

Time interval of the image:
-5.640000 465.080000
 
# RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
#  [deg]    [deg]    ['] [deg]  [deg]                   [']
170.0382 -60.5985    5.6  25.0   19.4   1.0580   2.0    8.3	Cen X-3                       
186.3672 -62.7208    5.2  24.1    0.2   1.1198   2.2    8.5	GX 301-2                      
320.0690 -80.4188    2.7  57.8  -12.0  12.0988   4.3 ------	UNKNOWN                       
220.0490 -26.6700    1.1  28.2 -109.6   6.6183  10.8 ------	UNKNOWN                       
257.1073 -52.8438    2.1  47.3  -52.8  11.7422   5.6 ------	UNKNOWN                       
237.7093 -28.2462    2.4  41.0  -93.3   8.6913   4.8 ------	UNKNOWN

Post-slew image of 15-350 keV band

Time interval of the image:

Plot creation:
Sun May 31 08:34:04 EDT 2015