The geomagnetic dipole field is tilted 11.3 ° with its axis relative to the earth axis.
The magnetic inclination i is the angle that makes the total intensity T or magnetic flux density relative to the plane of the true horizon. This angle varies from parallel to the earth's surface on the magnetic equator to the right of the magnetic poles. Equal inclination sites are connected by isoclines, the magnetic equator called acline as a line where the inclination is 0 °.
The inclination should not be confused with the magnetic declination that causes a lateral deviation.
wiki
