Tucson Projects 6005E and 6053E

A survey flown in 1975 is combined here with one flown in 1977 and 1978.
The data are not corrected for diurnal.  The report, GJBX-023(79), volume 1, 
gives some details about how the data were combined.  Tie lines 8 and 19 could
have been flown in 1974 rather than 1977.