Scale:3 km flight line separation
Format:ASCII text records
£0.5 per line km. Subject to number of users, licence fee and data preparation fee.
Uses:Site-level to Local-level use
The survey, flown by Canadian Aero Service in 1963, was digitised by the BGS by extracting values at flight line/contour line intercepts from the original base maps.
The survey comprises 136 363 line-kilometres and was flown at a line spacing of 3 km and a flying height of 1000 ft. The data is now owned by CGG and is available under licence to commercial users via the BGS.