SEGZ-parameters {
#Comment - This header defines a normal SEGY file
 Name,            Length,Description
 Textual-header,    3200, SEGY Rev(0) Default, length of character line header (bytes)
 File-header,        400, Length of binary line header (bytes)
 Trace-header,       240, Length of trace header (bytes)
 Trace-trailer,        0, Length of trace trailer, Normally not used
 TRACE_SAMP_FORMAT, INT2, Format 3 in the binary header, 16 bit over rides the value in binary header
}
Textual-header-definition {
 Name,Byte,Type,Vector,Scalar,Addend,Description
 DESCRIPTION,3120,ASCII,80,1,0
 WELL_ID,3070,ASCII,50,1,0
}
File-header-definition {
 Name,Byte,Type,Vector,Scalar,Addend,Description
 FH_SAMP_RATE,17,INT2,1,1,0,Sample interval in microseconds for this reel
 FH_SAMP_NUM,21,INT2,1,1,0,Number of samples for this reel
 TRACE_SAMP_FORMAT,25,INT2,1,1,0,Data sample format code 1=IBM floating point
 SEIS_DATUM,125,IEEE4,1,1,0,SEIS_DATUM elevation
 SEIS_REPLACEMENT_VELOCITY,129,IEEE4,1,1,0,Seismic replacement velocity
 MAXIMUM_ENSEMBLE_NUMBER,133,INT4,1,1,0
 EPSG_CODE,161,INT4,1,1,0,EPSG codes see http://www.epsg.org/
 LINE_NAME,301,ASCII,32,1,0,Internal Line Name
}
Trace-header-definition {
 Name,Byte,Type,Vector,Scalar,Addend,Description
 INLINE,9,INT4,1,1,0,The in-line number for 3D poststack data
 CROSSLINE,13,INT4,1,1,0,The cross-line number for 3D poststack data
 SOURCE_POINT,17,IEEE4,1,1,0,Energy source point number (shot peg)
 CDP,21,INT4,1,1,0,Ensemble no. (CDP CMP CRP etc)
 ITRACE_LINE,25,INT4,1,1,0,Trace sequence no within line
 TRTYPE,31,INT2,1,1,0,1=data 2=dead 3=dummy 4=time break 5=uphole (etc
 HORI_NSUM,33,INT2,1,1,0,No of horizontally summed traces in this trace
 OFFSET,37,IEEE4,1,1,0,Distance from source point to receiver group
 REC_HT,41,IEEE4,1,1,0,Elevation at receiver group
 SOURCE_X_LOCATION,73,IEEE4,1,1,0,Source coordinate - X (East)
 SOURCE_Y_LOCATION,77,IEEE4,1,1,0,Y-coordinate of ensemble
 CDP_X,81,IEEE4,1,1,0,X-coordinate of ensemble (CDP) for this trace
 CDP_Y,85,IEEE4,1,1,0,CPD coordinate (Y)
 RECEIVER_X_LOCATION,89,IEEE4,1,1,0,Receiver group coordinate - X
 RECEIVER_Y_LOCATION,93,IEEE4,1,1,0,Receiver group coordinate - Y
 LAG_TIME_A,105,INT2,1,1,0,Time between end of 240-byte header and time break [ms]
}