AEC is missing the following from the Binary Header

Byte Postion Format Description
133 I4 station number * 1000 @ start of line
137 I4 station number * 1000 @ end of line
What was the station number times 1000 used for?

AEC is missing the following from the Binary Header

Byte Postion Format Description
161 I2 hour of day
163 I2 minute of hour
165 I2 second of minute
167 I2 time basis 1 locat 2 GMT 3 other
169 I2 Trace weighting factor
171 I2 Geophone group number of roll switch
The above fields only pertain to pre stack data and I don't think it is important to retain these data.

PCP is missing the following from the trace Header

Byte Postion Format Description
109 I4 Mute start offset@ near
117 I4 Mute end offset @ far
121 IBM Max neg amp
125 IBM Max pos amp
I don't think anyone has made use of the offset for mute patterns. We do capture the mute start and end times.
Site Owner: Eric Keyser
Last Updated: Sept 15, 2002