C 1 USGS MARFAC CREW NO C 2 LINE AREA MAP ID C 3 REEL NO DAY-START OF REEL YEAR OBSERVER C 4 INSTRUMENT: MUDSEIS NT MODEL SERIAL NO C 5 DATA TRACES/RECORD AUXILIARY TRACES/RECORD CDP FOLD C 6 SAMPLE INTERVAL SAMPLES/TRACE BITS/IN BYTES/SAMPLE C 7 RECORDING FORMAT FORMAT THIS REEL MEASUREMENT SYSTEM C 8 SAMPLE CODE: C 9 GAIN TYPE: C10 FILTERS: ALIAS HZ NOTCH HZ BAND - HZ SLOPE - DB/OCTC11 SOURCE: NUMBER/POINT POINT INTERVAL C12 PATTERN: LENGTH WIDTH C13 SWEEP: HZ HZ LENGTH MS CHANNEL NO TYPE C14 TAPER: MS MS TYPE C15 SPREAD: C16 GEOPHONES: C17 PATTERN: C18 TRACES SORTED BY: RECORD C19 AMPLITUDE RECOVERY: C20 MAP PROJECTION C21 PROCESSING: C22 PROCESSING: C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 END EBCDIC