Comments:
L-4-77-NC A .421_051 nav file was downloaded from InfoBank. The trace
files for some lines had cdp’s‚ mistakenly recorded in the ffid field.
This was corrected prior to GMA processing. The trace headers for
lines 5 and 28 were also edited to fix bad cdp #s. Line 41 was edited
to remove all data after cdp #929 because of lack of nav. Line 35 was
provided in two parts, as two segy files named 35a and 35b. The nav
for the original line was split up to match the two parts. Note: The
segy file called 35b contains the first part of the line, and the segy
file called 35a contains the second part of the line. There is a small
gap in coverage between the 2 files. There is no segy data for lines
2, 4, 6, 26, 37, 43, 46, 1003, and 2003, so they were not processed.
There is no nav for lines 3a and 3b, so they were not processed.
