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Check Z (twt) range and sample interval
The Z values are usually correct but you can have a look in the EBCIDIC header to see if there is any information about the sample interval or Z-range.
Import 3D seismic
The resulting data set's name in the project is either based on the file name or byte positions in the EBCDIC header. To set EBCDIC header byte positions simply highlight the section you want as data set name. The label between the comboboxes always shows current name.