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# Copyright 1999-2020 Gentoo Authors.
# Distributed under the terms of the GNU General Public License v2

# This file contains descriptions of MAGNETIC_MODELS USE_EXPAND flags.

wmm2010 - the World Magnetic Model 2010, which approximates the main magnetic field for the period 2010–2015.
wmm2020 -  the World Magnetic Model 2020, which approximates the main magnetic field for the period 2020–2025.
wmm2015v2 - the World Magnetic Model 2015, which approximates the main magnetic field for the period 2015–2020.
igrf11 - the International Geomagnetic Reference Field (11th generation), which approximates the main magnetic field for the period 1900–2015.
igrf12 - the International Geomagnetic Reference Field (12th generation), which approximates the main magnetic field for the period 1900–2020.
emm2010 - the Enhanced Magnetic Model 2010, which approximates the main and crustal magnetic fields for the period 2010–2015.
emm2015 - the Enhanced Magnetic Model 2015, which approximates the main and crustal magnetic fields for the period 2000–2020.
emm2017 - the Enhanced Magnetic Model 2017, which approximates the main and crustal magnetic fields for the period 2000–2022.