Negative magnetic declination or variation Magnetic declination or variation adjustment Magnetic declination or variation adjustment Magnetic declination or variation adjustment Negative magnetic declination or variation Negative magnetic declination or variation Positive magnetic declination or variation Magnetic declination or variation adjustment Negative magnetic declination or variation Negative magnetic declination or variation Positive magnetic declination or variation Positive magnetic declination or variation Magnetic declination or variation adjustment Positive magnetic declination or variation Positive magnetic declination or variation Magnetic declination or variation adjustment Positive magnetic declination or variation Negative magnetic declination or variation