SYNOPSIS

        use Magnetic::Declination qw(mag_dec mag_inc);
    
        my $lat = 53.1234567;
        my $lon = -114.1234567;
        my $alt = 1098;
    
        my $declination = mag_dec($lat, $lon, $alt);
        my $inclination = mag_inc($lat, $lon, $alt);

DESCRIPTION

    This module calculates and returns the magnetic declination and
    inclination (dip) calculations based on WMM earth magnetism model
    for a specified latitude and longitude pair.

    See L<NOAA|https://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml> for
    details.