The first half of the Aeromagnetic Survey data, organized by cartridge FILE FORMAT DESCRIPTION read.me /SU2000/ su2000.001 MAGNETA Project Magnet 1976-1977, US survey /SU2002/ su2002.001-su2002.022 MAGNETB Project Magnet 1981, 1982; high density /SU2004/ su2004.001-su2004.007 MAGNETB Project Magnet 1982; high density /SU2006/ su2006.001-su2006.012 MAGNETB Project Magnet 1983; high density /SU2008/ su2008.001-su2008.018 MAGNETB Project Magnet 1984, 1985; high density /SU2010/ su2010.001-su2010.004 MAGNETB Project Magnet 1989; White Sands /SU2012/ su2012.001,3,4 NOAA Project Magnet 1952.5-1967.5, BGS Cleaned for DGRF 1955 and 1960 models su2012.002 NOAA U.S. Antarctica /SU2014/ su2014.001 MAGNETB Project Magnet 1981-1989,decimated world-wide coverage of altitudes above 20000 ft /SU2016/ su2016.001-su2016.042 Project Magnet 1987-1989,NGDC undecimated (Not present in NAVO decimated) /SU2018/ su2018.001-su2018.041 ASC Project Magnet 1988-1989,NAVO Preliminary (many processing errors) su2018.042-su2018.050 ASC Naval Research Lab 1990,Chilean Ridge /SU2020/ su2020.001-su2020.030 MAGNETB Project Magnet /SU2022/ su2022.001-su2022.022 MAGNETB Project Magnet /SU2024/ su2024.001-su2024.060 MAGNETB Project Magnet TAPES AND CARTRIDGES: SU2000, SU2001, SU2002, SU2003, SU2004, SU2005, SU2006, SU2007, SU2008, SU2009, SU2010, SU2011, SU2012, SU2013, SU2014, SU2015, SU2016, SU2017, SU2018, SU2019, SU2020, SU2021, SU2022, SU2023, SU2024, SU2025, DT0021, DT0035, DT0045, DT0046, DT0047, DT0048, DT0087, DT0279, DT0282, DT0295, OF0948