“…These factors include light, radiation, temperature, humidity, atmosphere, and soil structure and composition, which vary considerably with time and position over the Earth's surface [Larcher, ]. Likewise, Earth's magnetic field intensity more than doubles, increasing from 25 µT at the equator to 65 µT at the poles, while at the same time it changes direction and inclination vector with position, from parallel to perpendicular to the Earth's surface [Glassmeier and Vogt, ]. In addition, the Earth's magnetic field has been constantly changing over time.…”